Chapter II: A. 10. Micrometers on pearl or glass, in sets,

from 10s. 6d. to 2 2 0

Ivory sliders prepared for transparent objects, per dozen 0 12 0

Custance’s fine vegetable cuttings in large ivory sliders,
from a set of six sliders to four dozen, per dozen 1 10 0

Bottles of salts for configurations, packed in mahogany
portable cases, according to the number, from 2l. 2s. to 5 5 0

Magazines of microscopical apparatus, with collections of objects,
fitted up to any extent and to order.

INDEX.

A.

Abdomen of insects, 201

Activity of minute animals, 212, note 427

Adams improves lucernal microscope, 21

---- ---- ---- described, 64

Advantages of microscopes, whence derived, 45

Æpinus, his microscopic telescope, 3, 22

Agility of jerboa, note 212--kanguroo, ibid.

Air destroys and produces animation, 173

Anatomical microscope, Lyonet’s, 122

Angle of incidence, what, 32--of refraction, ibid.

Animalcula, a variety of diseases attributed to them, note 433

---- in teeth, their existence doubted, note 432

---- in infusions, to procure, 151

---- infusoria, history of, 415

---- ---- erroneous opinion concerning them, 421--refuted, 423

---- ---- monas, 430--proteus, 436--volvox, 437--enchelis,
443--vibrio, 451--cyclidium, 479--paramæcium, 482--kolpoda,
484--gonium, 489--bursaria, 491--cercaria, 492--leucophra,
500--trichoda, 507--kerona, 530--himantopus, 533--vorticella,
536--brachionus, 563--additional, 570

Antennæ of insects described, 190--conjectures on their use, note 191,
192

---- their characters, 192

Ants, white, or termites, history of, 308

Aphides, their transformations, 260

---- ---- generation, 274

---- ---- ---- experiments on by Bonnet, 274

---- ---- ---- ---- by Richardson, 275

Apis or bee, its proboscis to dissect, 144

---- sting to dissect, ibid.

---- proboscis described, 181

---- generation of, 279

Apparatus to Cuff’s microscope, 90

---- Adams’s lucernal microscope, 77

---- Jones’s improved microscope, 96

---- most improved, 101--additional, 102

---- Culpeper’s microscope, 105

---- Martin’s opake solar, 109

Aptera, order of insects, 220--to collect, 687

Aquatic microscope by Ellis, 119

Aranea or spider, 621

Argand’s lamp described--the management of, 69

Aristotle, polypes mentioned by, note 360

Athens, cruelty punished at, note 152

Augustine (St.) polypes not unknown to him, note 359

B.

Baker, his method of viewing particles of blood, 149

Banks (Sir Jos.) his approbation of Walker’s publication on shells,
630

Barbut, his remedy for sting of gnats, note 188

---- his opinion on sense of hearing in insects, note 217

---- on the brent goose, note 347

Barker’s compound microscope, 17

Barnacle, or lepas anatifera, beard of, to prepare, 145

Bee, its proboscis to dissect, 144

---- sting, to dissect, ibid.

---- proboscis described, 181

---- generation of, 279--Schirach’s account of, 280--Debraw’s ditto,
281

---- fecundity of, 290

Beetle, its transformations, 242

---- diamond, its transcendant beauty, 204

Beetles, to procure, 680

Blatta, cockroach, mischief occasioned by them, note 683

Blea of vegetables, to prepare, 162

Blood, its circulation and particles to examine, 148

---- ---- in flounders, &c., 149

---- ---- in tails of eels, ibid.

Boat-fly, its wings, 143

Body of insects, 200

Bones, to examine, 146

Bonnet, theory of transformation of insects, 261

---- experiments on aphides, 274

---- on the interior structure of vegetables, 575

Botanical microscope by Withering, 123

---- ---- pocket and universal, 124

---- magnifiers, 125

Box, breeding, figure of, 671

Brain of insects, to prepare, 146

Brass micrometer, by Coventry, 60

Breeze-fly, its proboscis to dissect, 144

Brent-goose, curious idea of its origin, 346, note 347

Buffon, his hypothesis, 421

---- refuted by Ellis, 423

Bug, bed, described, 618--introduced after the fire of London, note
684

Butterfly net, figure of, 674

Butterflies, wings of, 144, 207

---- remarks on their substance, note 207

---- proboscis of, 186

---- and moths, to collect and preserve, 669

---- figure of the manner of setting them, 677

C.

Cabinet, instructions for forming, 693

---- how to preserve insects in, 694

---- Drury’s, short account of, 695

Cantharis, its value in medicine and commerce, note 175

Cast skin of insects, to prepare, 145

Caterpillars, habitations of, 325

Cavallo applies pearl micrometers to telescopes, 60

Change of insects to pupa state, 229--to fly or perfect state, 236

Chrysalis, see pupa

Chrysomela asparagi described, 353

Cimex striatus described, 352

---- lectularius, 618

Circulation of blood, to examine, 148

---- in eels, flounders, and gudgeons, 149

Clark, his account of British oestri, note 294

Cochineal, to prepare tincture of, 61

---- its beautiful dye, note 175

Compassion to animals formerly not regarded, note 177

Coleoptera order of insects, 219

---- to collect, 680

Configurations of salts, to prepare, 163

---- ---- to view by the microscope, 166

Conjectures on the use of antennæ, note 191, 192

---- on sense of hearing, and on sounds proceeding from insects, note
216

Construction of timber, 575

Cossus, caterpillar of, described, 334

Coventry, his glass, pearl, &c. micrometers, 60

---- ---- ---- ---- how used, ibid.

Creation, wisdom of God in the, 167

---- providence in ditto, 174--goodness, 175--the effect it ought to
produce, 176

Criteria, distinguishing, of insects, 216

Cruelty to animals, reflections on, 150, note, ibid.

Cuff, his double constructed microscope described, 89--apparatus to
ditto, 90--how to use, 91

Culex, its proboscis to dissect, 144

---- pipiens, its proboscis described, 187

---- its unpleasant effects, note, ibid.--farther described, 623

Culpeper’s microscope, 104

---- ---- apparatus to, 105

---- ---- to use, ibid.

Curculio imperialis, 204

Custance, list of his vegetable cuttings, 709

Cynips or gall-fly, its transformation, 260

D.

Death-head moth, the harbinger of mortality!, note 669

---- watch of Linnæus--Geoffroy--Shaw--Fabricius--Gmelin, note
688--the terror it occasions, note 689--quotations from
Brown--Swift--Gay and Shakspeare, ibid.

Debraw, his account of bees, 281

De Geer, on the generation of a moth, 291

De la Hire first notices the stemmata of insects, 199

Dellebarre’s compound microscope, 16

Dermestes tesselatus, note 688

De Saussure, a writer on the interior structure of vegetables, 575

Diptera order of insects, 219

---- ---- ---- to collect, 687

Dissecting table, Lyonet’s, to use, 123

---- ---- Musschenbroeck’s, 137

---- Swammerdam’s method of, 138

---- Lyonet’s ditto, 141

---- Hooke’s observations on, 142

Divinis compound microscope, 15

Dragon-fly, eyes of, to dissect, 145

Drebell introduces the microscope into England, 2

Drone-fly, eyes of, 196

Drury, his magnificent cabinet of insects, 695

---- illustrations of natural history, 696

Du Hamel writes on the interior structure of vegetables, 575

Dutch claim the invention of the microscope, 1

E.

Earwig, its wings, 143, 205

Eels, scales of, to examine, 147

---- circulation of blood in, 148

---- paste, to procure, 152--to preserve, ibid.--described, 462

---- vinegar, 461--fresh water, 468--salt water, 469--in blighted
wheat, ibid.

Ellis’s aquatic microscope, 6, 119

---- refutes Buffon, &c., 423

Eggs of insects, 286--tenthredo--hemerobius, ibid.--phalæna neustria,
287--oestrus tarandi, 288--ephemera--phryganea--libellula,
ibid.--moths, 289--bees--wasps--spiders--ants, ibid.

Elytra of insects, 204

Ephemera, eyes of, 197

Exuvia of insects, to prepare, 145

Eye, nature of vision in, 28

Eyes of insects, 193--drone, 196--silkworm, ibid.--libellula,
ibid.--lobster, 197--ephemera, ibid.

F.

Fat of insects, to prepare, 146

Fibres, muscular, to prepare, ibid.

Fishes, their scales to examine, 147

Flea described, 616--remarks on, note 617

Flies, to dissect eyes of, 145

Fly, Spanish, its utility, note 175

---- or perfect state of insects, 236

---- spider, see hippobosca equina

Focus, what it is, 31

Fontana, an early maker of microscopes, 3

Food of polypes, 155

---- insects, 291--gryllus migratorius, 293--oestrus bovis,
294--equi--hæmorrhoidalis--veterinus--ovis, note 294--ichneumon fly,
295, note 297

Forceps for catching insects, figure of, 675

Forficula auricularia, its wings, 143--farther described, 205

Frog, circulation of blood in, 150

G.

Gay, quotation from, note 690

Generation of aphides, 273--Bonnet’s experiments on ditto,
274--Richardson’s ditto, 275

---- bees, 279--Schirach’s account of, 280--Debraw’s, 281

Gerard, author of the Herbal, his credulity, note 347

Globules, glass, applied to the microscope, 8--manner of making them,
ibid., 11--by Butterfield, 9--Di Torre, 10--Gray, 12

---- lenses described, 34

---- micrometer, Coventry’s, 60

Gnat, its proboscis to dissect, 144--described, 187--a formidable
weapon, note ibid.--Barbut’s remedy for its sting, 188--preventives
recommended, ibid.--mischiefs occasioned by them at Oxford,
623--formidable in the West Indies, note 189--Hooke an advocate for
them--remarks on ditto, ibid.

---- farther described, 623

Gray, his water microscope, 13

Greeks not unacquainted with the single microscope, 3--spectacles
known to them, ibid.

Grew, on the interior structure of vegetables, 575

Gryllus migratorius, 293--mischiefs occasioned by, note 684--many seen
in England, ibid.

H.

Habitation of insects, 299

Haddock, scale of, 356

Halteres of insects, 204

Hartsoeker applies glass globules to the microscope, 8

Heads of insects, 179

Hemerobius perla, its wings described, 206

Hemiptera order of insects, 219--to collect, 683

Hewson, his method of viewing particles of blood, 149

Hieronymus, curious passage quoted from, note 178

Hill (Dr.) writes on the interior parts of vegetables, 575--on the
rind, 576--vessels between rind and bark, 580--bark, 582--cellular
tissue, 585--vasa propria interiora, 586--blea, ibid.--wood,
587--corona, 590--pith, 592--sap vessels, 594--vasa propria intima,
595

---- (Mr. John) his improvement on the lucernal microscope, 84

Hippobosca equina survives the loss of its head, note 151--its
transformations, 261

Hogarth, his five stages of cruelty, note 152

Home, account of the particles of the blood, note 626

Hooke applied glass globules to the microscope, 8--his compound
microscope, 15--observations on dissecting insects, 142--pleads in
justification of gnats, note 189--computation on the eyes of silkworm,
196--on the motion of butterflies wings, 209

Hooper, quotation from, 710

Hornet, to dissect sting of, 144

Humanity towards insects recommended, note 152

Hunter’s remarks on Schirach and Debraw’s experiments, note 285

Hydræ or fresh water polypes, history of the discovery of,
357--improperly called insects, note 363--viridis--fusca--grisea,
365--their food, 373--generation, 379--re-production, 382--hydra
pallens, 389--hydatula, 390--stentorea, 392--socialis, 395

Hymenoptera order of insects, 219

---- ---- ---- to collect, 686

I.

Jansens and son among the first introducers of the microscope, 2

Jerboa, its agility, note 212--kanguroo, ibid.

Jerom, curious passage from, note 178

Imperfections of microscopic glasses, 46

Improvements on lucernal microscope, 80

---- compound microscope, 92, 99

Infusions, animalcula in, to procure, 151

---- of pepper, &c., 153

Insects, Lyonet’s table to dissect, 123

---- Musschenbroeck’s ditto, 137

---- wings to dissect, 143--proboscis, 144--eyes, 145--exuvia, to
prepare, 145--muscular fibres, 146--fat, ibid.--brains,
ibid.--muscles, ibid.

---- their wonderful mechanism, 172

---- preferred by Swammerdam to other parts of the creation, ibid.

---- not included in divine omniscience, note 178

---- general description of, 178--definition of, 179--divisions,
ibid.--head, ibid.--mouth, 180--jaws, 181--tongue and proboscis,
ibid.--proboscis of a bee, 182--butterfly, 186--gnat, 187--tabanus,
188--antennæ, 190--conjectures on their use, note 191, 192--their
characteristics, 193--palpi--eyes, ibid.--reticulated eyes,
195--drone--silk-worm--libellula--ephemera--experiments on the eyes,
197--monoculus polyphemus, 198--spider, 199--stemmata, ibid.

---- trunk of--thorax--scutellum--sternum, 200

---- abdomen--spiracula, 201

---- limbs--wings, 201--halterers, 204--elytra and wings under ditto,
204--wings of forficula auricularia, 205--hemerobius perla, 206--legs,
210--tail and sting, 213

---- distinguishing criteria of, 215--conjectures on their sense of
hearing and the sounds proceeding from them, note 217--Barbut’s
opinion, ibid.--remarks on ditto, ibid.

---- classes or orders into which they are divided, 219

---- transformation of, 220--egg to larva, 222--change to pupa,
229--preparation for change to perfect state, 234--change to ditto,
236--metamorphosis of silk-worm, 240--beetle, 242--rhinoceros beetle,
245--musca chamæleon, 248--libellula, 257--cynips, 260--aphides,
ibid.--hippobosca equina, 261--Bonnet’s theory of, ibid.

---- respiration of, 265--experiments on by Lyonet,
267--Musschenbroeck, 268

---- ---- in musca pendula, 269

---- generation of--aphides, 272--Bonnet’s experiments on,
274--Richardson’s, 275--Bees, 279--Schirach’s account of,
280--Debraw’s ditto, 281--eggs of insects, 286--tenthredo,
ibid.--hemerobius--phalæna neustria--oestrus
tarandi--ephemera--phryganea--libellula--moths--bees--wasps--spiders
--ants, ibid.

---- fecundity of, 290--Reaumur’s calculation of that of the queen
bee, ibid.--Lyonet’s on the generation of a moth, 291--De Geer’s,
ibid.

---- food of, 291--gryllus migratorius, 293--oestrus bovis,
294--equi--hæmorrhoidalis--veterinus--ovis, note 294--ichneumon fly,
note 295, 297

---- habitations of, 299--spiders--aquatic bugs--gyrinus--podura--
libellula--ephemera--phryganea--culices--tipulæ--notonecta--nepa,
300--julus--scolopendra--oniscus, 301--formica-leo, note,
301--solitary bees, 303--ichneumon wasp, 306--termites,
308--caterpillars, 325

---- internal parts of, 334--Lyonet’s account of the caterpillar of
the cossus, ibid.--muscles--spinal marrow, 339--tracheal arteries,
340--corpus crassum--oesophagus--ventricle, 342--intestines, 343

---- to collect and preserve, 665--the pursuit recommended,
666--method of procuring lepidoptera, 668--in their caterpillar state,
670--manner of breeding them, 671--figure of breeding box, ibid.--to
collect them in their chrysalis state, 673--in their fly state,
674--figure of the net, ibid.--figure of forceps, 675--to manage them
in their fly state, with a figure, 677--coleoptera, to collect,
680--hemiptera, 683--neuroptera, 685--hymenoptera, 686--diptera,
687--aptera, ibid.--proper time for collecting, 696--instructions to
form a cabinet, 693--Drury’s collection described, 695--remarks on
collecting Asiatic insects, 696

Instrument for cutting sections of wood, by Adams, 19--Cumming,
ibid.--Custance, ibid.--described, 127--appendage to ditto, 128

Jones, improved lucernal microscope, 80--lanthorn microscope,
88--improved compound microscope, 92--most improved, 99--apparatus to
ditto, 101--additional, 102

Italians claim the invention of the microscope, 1

Ivory micrometer by Coventry, 60

K.

Kanguroo, its agility, note 212

L.

Lamp, Argand’s, described, 69

---- ---- applied to lucernal microscope, 76

Lanthorn microscope, 88

Larva state of insects, 223

Leaves of trees and plants to examine, 147

Leeuwenhoek’s single microscope, 7

---- description of blood vessels in eels, 149

Legs of insects, 210

Lenses, different kinds of, 34--their properties, ibid.

Lepas anatifera, beard of, to prepare, 145--described, 344

Lepidoptera order of insects, 219

---- ---- to procure and preserve, 668

Leucopsis dorsigera, 347

Libellula, eyes of, to dissect, 145

---- described, 195

Lice, polypes infested with them, 156

---- plant, see aphides

Lieberkühn, single microscope used by him, 6

---- improves ditto, 20

Light, to manage for microscope, 134

Limbs of insects, 201

Linnæus, his system commended, 168

---- classification of insects, 219

Lists of microscopic objects, 608, 698

Lizard, its skin to examine, 147

Lobster, eyes of, to dissect, 145

---- insect, 348--first noticed in this country by Mr. J. Adams,
348--described by Martin--two in Mr. Marsham’s possession,
ibid.--known to Aristotle--to Wolphius--Scaliger--De
Geer--Fabricius--four in the editor’s possession--a living one
presented to him--two found alive in Percy street--Rösel’s account of
it--Seba probably mistaken, note 350

Locusts, 293--dreadful scourge, note 684

---- many seen in England in 1748, ibid.

Louse, common, described, 619

Lump-sucker described, 352

Lyonet, single microscope used by him, 6

---- anatomical microscope, 122--method of dissecting,
141--experiments on the respiration of insects, 267--generation of a
moth, 290--description of the caterpillar of the cossus, 334

M.

Magnifiers, botanical, 125

Malpighi writes on the structure of vegetables, 575

Marsham on the ichneumon fly, note 297

Martin improves solar microscope, 20

---- list of his tracts on the microscope, note 21

---- applies slips of glass, &c. to microscopes, 60

---- improved opake and transparent solar microscope, 106--objects,
110

Medicines, their operations attributed to animalcula!, note 433

Medium, rare, 32--dense, ibid.

Meloe monoceros described, 354

Metamorphoses of insects, 220

Micrometer needle described, 54--how used, 55

---- glass, pearl, &c. by Coventry, 60--how used, 61

---- ---- ---- a set accompanies Jones’s best microscope, 63

Microscope, date of its invention, 1--name of inventor not known,
ibid.--its excellence, 2, 23--early introduced by Jansens, 2--one
brought to England by Drebell, ibid.--made by Fontana in 1616, 3--to
prepare vegetable substances for, 158

---- single, probably known to the Greeks and Romans, 3--account of,
5--rationale of, 40--used by Leeuwenhoek, &c., 6--described, 7--glass
globules applied to, 8--how made by Butterfield, 9--Di Torre, 10--to
make glass globules, 11

---- water by Gray, 13--extempore, ibid.

---- Swammerdam’s described, 138

---- single, Wilson’s, or screw barrel, 115--with a scroll and mirror,
117--small, for opake objects, 118--Ellis’s aquatic, 119--Lyonet’s
anatomical, 122--Withering’s botanical, 123--pocket botanical and
universal, 124

---- compound, by Hooke, Divinis, and Bonnani, 15--Delebarre,
16--Barker, 17--Smith, ibid.

---- ---- its principles, 42--magnifying powers, 49--experiments on
ditto, 51--how ascertained, 53--of more general use than any other,
note 89--Cuff’s described, ibid.--apparatus to ditto, 90--to use,
91--chest, note 90--Jones’s improved, 92--apparatus to ditto, 96--how
to use, 98--Jones’s most improved, 99--apparatus, 101--additional
apparatus, 102--how to use, 103--Culpeper’s or three pillared,
104--apparatus, 105--to use, ibid.

---- lanthorn, 88

---- solar, by Lieberkühn, 17--improved by him, 20--by Ziehr,
ibid.--Martin, ibid.--its principles, 45--as improved by Martin
described, 106--apparatus to, 109--to use, 110

---- lucernal, Adams’s, 21--described, 64--to examine opake objects
with, 71--ansparent ditto, 74--apparatus to, 77--improvements on, by
Jones, Prince and Hill, 80

---- portable, and telescope, 125

---- to prepare for observation, 130--to prepare objects for, 137

---- concise list of objects for, 608--opake, 609--transparent,
614--copious list of ditto, 698

Millepedes food for polypes, 155

Minerals, to examine, 148

Minute animals, their strength, activity, and vivacity, note 427

---- shells, arrangement and description of, 629

Monoculus Polyphemus, its eyes described, 198

Montaigne’s remarks on kindness to animals, note 151

Moths, wings of, 144, 207

Motion of butterflies wings, experiments on, by Hooke, 209--remarks
on, 212--dittoby Reaumur, 213

Mouth of insects, 179

Müller on animalcula infusoria, 428

Münchhausen’s hypothesis, 421

---- ---- refuted by Ellis, 423

Musca chamæleon, its transformation, 248--pendula ditto, 256--its
respiration, 269

Muscles and fibres of insects, to prepare, 146

Musschenbroeck’s table for dissecting insects, 137

---- experiments on their respiration, 268

Musquetos, their sting formidable, note 189

N.

Natural history, importance of, 167

Needham, his hypothesis of animalcula in infusions, 421--refuted, 423

Needle micrometer, 54

Net, figure of butterfly, 674

Neuroptera order of insects, 219--to collect, 685

Notonecta, its wings, 143

O.

Objects to prepare for the microscope, 137

---- ---- Swammerdam’s method, ibid.

---- ---- Lyonet’s ditto, 141

---- for the microscope, concise list of, 608--copious list of, 698

Observation, to prepare microscope for, 130

Observations, Hooke’s on dissecting, 142

---- on Hooke’s apology for gnats, note 189

Omniscience of God denied with respect to insects, &c., note 177

Opake objects, to examine with the lucernal microscope, 71--list of,
608

Opake and transparent solar microscope, by Martin, 106

---- small, microscope, 118

Optical glasses, their several kinds, 34--different effects,
ibid.--their imperfections, 47

Orders into which insects are divided, 219

Ores and minerals to examine, 148

Ox-fly, its proboscis described, 188

Oxford, swarms of gnats which appeared at note, 188--the mischiefs
they occasioned, ibid.

P.

Palpi of insects described, 193

Parrot-fish, scale of, 355

Particles of blood to examine, 149

---- ---- their true form ascertained, ibid. and note 626

Paste eel described, 462

Pearch, sea, scale of, 356

Pearl micrometer, Coventry’s, 60

Pediculus humanus described, 619

Plancus on minute shells, 629

Plant lice, see aphides

Plants, their leaves to examine, 147

Pocket botanical and universal microscope, 124

Polypes to procure and feed, 153--infested with lice, 156--to preserve
in health, ibid.--to observe with accuracy, 157--to preserve in
sliders, ibid.--their food, 291

Pores of skin to examine, 147

Portable microscope and telescope, 125

Proboscis of insects, to dissect, 144--culex--tabanus--bee,
ibid.--described, 181--bee, ibid.--butterfly, 186--gnat, 187--tabanus,
188

Prince, (Rev. Dr.) his improvement on lucernal microscope, 84

Ptinus fatidicus, note 688

---- pulsator, ibid.

Puceron, see aphides

Pulex aquaticus food for polypes, 155

---- irritans described, 616

Pupa, change of insects to, 229

R.

Ray, incident, 32--refracted, ibid.

Reaumur on the motion of insects, 212

---- ---- fecundity of queen bee, 290

Redi, his observations on the production of flies, 174

Reflections on cruelty to animals, 150, note ibid.

Refraction, its principles, 32--ascertained by experiments, 33

Remarks on the substance of butterflies wings, note 207

---- on Barbut’s opinion on the sense of hearing in insects, note 217

---- on collecting Asiatic insects, 696

Respiration of insects, 265--experiments on, by Lyonet,
267--Musschenbroeck, 268

---- musca pendula, 269

Richardson’s experiments on the generation of aphides, 275

Rind of vegetables to prepare, 160

Romans probably acquainted with the single microscope, 3

---- spectacles known to them, ibid.

S.

Salts and saline substances, to prepare, 163

---- their crystallization, 600--what understood by it, 601--phænomena
of ditto, 602--their various figures, 603--Bergman’s account of their
forms, 605

---- list of, for microscopic observation, 710

Sap vessels of plants, to fill, 162

Scales of fish to examine, 147--eel, to prepare, ibid.

---- parrot fish, 355--sea pearch, haddock--West-India pearch--sole
fish, 356

Scutellum of insects, 200

Sections of wood, instrument for cutting, 127--appendage to ditto, 128

Seeds, vegetable, a descriptive list of a variety of,
645--lithospermum, ibid.--cyminum, 646--papaver, 647--cardirus,
ibid.--plantago, 648--staphis agria, 649--anisum, ibid.--fœniculum,
651--grana Paradisi, 652--petroselinum, 653--petroselinum Macedonicum,
654--coriandrum, 655--seseli, ibid.--hyoscyamus, 657--cicer,
658--laurus, 659--ficoides afra, 660--palma aricefera, 661--juniperus,
ibid.--santonicum, 662--scabiosa, 663

Sentiments of learned men in earlier times on minute parts of
creation, note 177

Shakspeare, quotation from, on the feeling of insects, note
150--parody on a passage in, note 690

Shells, to view, 148--minute, arrangement and description of,
629--manner of procuring them, 632--observations on, ibid.--serpula,
633--dentale, 635--patella, ibid.--helix, ibid.--turbo, 636--trochus,
638--buccinum, 639--voluta, ibid.--bulla, 640--nautilus,
ibid.--Mytilus, 642--anomia, 643--arca, ibid.--cardium, 644--lepas,
ibid.--echinus, ibid.--asterias, 645

Shoots, vegetable, to obtain, 159

Silk-worm, its eyes, 196--metamorphosis, 240

Skin, pores of, to examine, 147

---- of sole-fish, 356--lizards, 147

Smith, his compound microscope, 17

Sole-fish, scale of, 356--skin of, ibid.

Spanish-fly, its utility in medicine and commerce, note 175

Spider, eyes of, 199--described, 621

Spiracula of insects, 201

Stemmata of ditto, 199

Sternum of ditto, 200

Stillingfleet, his remarks on the importance of natural history, 331

Sting of bee to dissect, 144--described, 214

Stings of insects, 213

Strength of minute animals, note 427

Swammerdam uses the single microscope, 6--his method of preparing
objects, 137--his microscope described, 138--manner of dissecting,
ibid.

Swift, quotation from, on the death-watch, note 689

System, Linnean, commended, 168

T.

Tabanus, its proboscis described, 188

Tail of insects, 213

Telescope, portable microscope and, 125

Termes pulsatorium, note 688

Termites or white ants, history of, 308

Thorax of insects, 201

Thrips physapus described, 350

Timber, organization of, 574

Tincture of cochineal, to prepare, 161

Tongue of insects, 181

Transformation of insects, 220--rhinoceros beetle, 245--musca
chamæleon, 248--pendula, 256--libellula, 257--cynips, 260--aphides,
ibid.--hippobosca equina, 261--theory of, by Bonnet, ibid.

Transparent objects to examine with the lucernal microscope, 74--to
transmit on a screen, 75

---- ---- list of, 614

Trees, leaves of, to examine, 147

Trunk of insects, 201

Tubularia campanulata, 411

V.

Vegetable substances, to prepare for the microscope, 159--young
shoots, ibid.--rind, 160--blea, 162--sap vessels, to fill, 162

---- seeds, descriptive list of, 645

Vegetables, their beauty and perfection, 574

Vinegar eel described, 461

Vision, its principles shewn by experiments, 27

Vivacity of minute animals note, 427

Vorticellæ described, 396--anastatica, 397--pyraria, 400--cratægaria,
ibid.--opercularia, 401--umbellaria, 402--berberina, 406--digitalis,
ibid.--convallaria, 407--urceolaris, 408--tubularia campanulata, 411

W.

Walker on minute shells, 630--commended by Sir Jos. Banks,
ibid.--extracts from, 633

Wasp, its sting to dissect, 145

Water, eel in fresh, 468--in salt ditto, 469

Wheat, eel in blighted, 467

Wheel animal, 549

Willughby detects a pretended discoverer of animalcula, note 432

Wilson, his screw-barrel microscope, 115--ditto with scroll, 117

Wings of insects to dissect, 143

---- forficula auricularia, ibid.--notonecta, ibid.--butterflies and
moths, 144, 207--described, 201--hemerobius perla, 206

Wisdom, divine, displayed in the creation, 267, 174--providence,
174--benevolence, 175

Withering, his botanical microscope, 115

Wood, instrument for cutting sections of, 127,--appendage to, 128

Worm, silk, its eyes described, 196

Worms, red, food for polypes, 155

Z.

Ziehr improves solar microscope, 20

_T. Milne del._

London. _Printed for & Published by_ George Adams _N.^{o} 60, Fleet Street, as the act directs. May 20, 1787._

_Jn. Lodge sc._]

_London Printed for & Publish’d by Geo.^{e} Adams N.^{o} 60 Fleet Street May 20^{th} 1787._

_Goodnight sculp._]

_T. Milne del._

London. _Printed for & Published by_ George Adams _N.^{o} 60, Fleet Street, as the act directs. May 20, 1787._

_J. Lodge sculp._]

London. _Printed for & Published by_ F. Kanmacher, and W. & S. Jones, _135 Holborn as the Act directs, 1.^{st} October 1797._

_J. Hawksworth Sculp._]

_London Printed for & Publish’d by Geo.^{e} Adams N.^{o} 60 Fleet Street May 20^{th} 1787._]

_London Printed for & Publish’d by Geo.^{e} Adams N.^{o} 60 Fleet Street May 20^{th} 1787._]

_London Printed for & Publish’d by Geo.^{e} Adams N.^{o} 60 Fleet Street May 20^{th} 1787._]

_London Printed for & Publish’d by Geo.^{e} Adams N.^{o} 60 Fleet Street May 20^{th} 1787._]

_London Printed for & Publish’d by Geo.^{e} Adams N.^{o} 60 Fleet Street May 20^{th} 1787._]

_T. Milne del._

London. _Printed for & Published by_ W. & S. Jones, _135 Holborn_, & F. Kanmacher _Apothecaries Hall, as the Act directs, 1,^{st} December 1797._

Jn. Lodge sc.]

_London Printed for & Publish’d by Geo.^{e} Adams N.^{o} 60 Fleet Street May 20^{th} 1787._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street as the act directs. May 20, 1787._

_J. Lodge sc._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street as the act directs. May 20, 1787._

_Jn.^{o} Lodge sculp._]

London. _Printed for & Published by_ F. Kanmacher, and W. & S. Jones, _135 Holborn, as the Act directs, 1.^{st} November 1797._

_J. Hawksworth sculp._]

London. _Printed for & Published by_ W. & S. Jones, _135 Holborn, and_ F. Kanmacher, _Apothecaries Hall, as the Act directs, November 1.^{st} 1797._

_J. Hawksworth sculp._]

_T. Milne del._

London _Printed for & Published by_ George Adams, _N.^{o} 60, Fleet Street, as the Act directs. May 20, 1787._

_Jn.^{o} Lodge sc._]

_London Printed for & Publish’d by Geo. Adams, 60 Fleet Street, May 20^{th} 1787._]

_London Printed for & Publish’d by Geo. Adams, 60 Fleet Street, May 20^{th} 1787._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the act directs. May 20, 1787._

_Jn.^{o} Lodge sc._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the act directs. May 20, 1787._

_Jn.^{o} Lodge sc._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the Act directs. May 20, 1787._

_Jn. Lodge sc._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the act directs. May 20, 1787._

_J. Lodge sc._]

_J. Wigley. Sc._

London. _Printed for & Published by_ George Adams, _N.^{o}_]

_60 Fleet Street, as the act directs. 20 May 1787._

_Bonles Sc._]

_J. Wigley. Sc._

London. _Printed for & Published by_ George Adams, _N.^{o}_]

_60 Fleet Street, as the act directs. 20 May 1787._

_Bonles Sc._]

_T. Milne Delin.^{t}_

_London Published May 1.^{st} 1787. Geo.^{e} Adams N.^{o} 60 Fleet Street._]

_London Published May 1.^{st} 1787. Geo.^{e} Adams N.^{o} 60 Fleet Street._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the act directs. May 20, 1787._

_J. Lodge sc._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the act directs. May 20, 1787._

_J. Lodge scu._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the act directs. May 20, 1787._

_J. Lodge sc._]

_London Printed for & Publishd by_ Geo.^{e} Adams _N.^{o} 60 Fleet Street May 20^{th} 1787._]

_T. Milne del._

London. _Printed for & Published by_ George Adams, _N.^{o} 60 Fleet Street, as the act directs. May 20, 1787._

_Jn. Lodge sc._]

A
CATALOGUE
OF
Optical, Mathematical, and Philosophical
Instruments,
MADE AND SOLD BY W. AND S. JONES,
[No. 135,]
NEXT FURNIVAL’S-INN, HOLBORN, LONDON.

OPTICAL INSTRUMENTS.

_£._ _s._ _d._

Best double-jointed standard gold spectacles, with
pebbles, and fish-skin gold-mounted case 16 16 0

Ditto single-jointed, with ditto case 10 10 0

Best double-jointed silver ditto, with pebbles 1 16 0

Ditto, ditto, with glasses 1 1 0

Best single-jointed, with pebbles 1 8 0

Ditto, with glasses 0 13 0

Best double-jointed steel ditto, with glasses 0 9 0

An improved sort of ditto for ladies 0 10 6

Second best double-jointed steel spectacles, with spring
case 0 7 6

Common ditto 0 4 6

Best single-jointed steel spectacles 0 4 6

Second best ditto 0 2 6

Common ditto 0 1 6

Tortoishell spectacles, silver-jointed, with pointed, and
other shaped sides, peculiar for their lightness and
uninterruption of dressed hair, in morocco leather cases 0 10 6

Ditto, double-jointed frames 0 15 0

Spectacles for eyes that have been couched 0 7 6

Ditto with green glasses for very weak and inflamed eyes,
according to the frames, from 6s. to 1 1 0

Ditto for the same purpose, with new contrived portable
shades to screen the eyes from candle, or other light 0 15 0

Nose spectacles in silver 0 7 6

Ditto in tortoishell and silver. 0 4 0

Ditto in horn and steel 0 1 6

Spectacle cases in very great variety, from 2d. each to 10 10 0

Concave glasses for short-sighted persons, in horn cases 0 1 6

Ditto in tortoishell, pearl, silver, &c. from 2s. 6d. to 2 2 0

Ditto in new-contrived frames for gentlemen when shooting 0 16 0

Reading and burning glasses, in various mountings, from
1s. to 1 16 0

Convex glasses for watch-makers, engravers, &c. from 1s.
to 0 10 6

Gogglers, to guard the eyes from the dust or wind 0 3 0

New green-light shades for the eyes 0 6 6

Opera glasses, in great variety of mountings, from 4s.
6d. to 2 12 6

Ditto, on an improved construction of glasses, plain
mounting 1 1 0

REFRACTING TELESCOPES of various lengths, from 6s. to 1 16 0

Ditto to use at sea by night, from 1l. 11s. 6d. to 2 12 6

Achromatic stick telescopes of various lengths from 18s.
to 4 0 0

The new-improved ditto, with three sliding brass tubes,
by which an instantaneous view of the object is obtained,
and shuts up very short for the pocket, of one foot in
length, in a case 1 11 6

Second best two-drawers, ditto 1 1 0

Twenty inch best three-drawers, ditto 2 12 6

Ditto second best two-drawers 1 10 0

Two feet best three-drawers, ditto 4 4 0

Ditto second best, ditto 3 3 0

Three feet, best four-drawer ditto 6 6 0

Second best ditto 4 4 0

The preceding telescopes, fitted up elegantly with silver
or plated tubes, from 2l. 2s. to 21 0 0

Astronomical eye-pieces and portable brass stands for the
above, from 10s. 6d. to 2 12 6

The new-improved 2¹⁄₂ feet achromatic refractor, on a
brass stand, mahogany tube, with two sets of eye-glasses,
one magnifying about forty times for terrestrial objects,
and the other about seventy-five times for astronomical
purposes, packed in a mahogany box 9 9 0

Ditto, ditto, the tube all brass, with three eye-pieces 11 1 6

The 3¹⁄₂ feet ditto, ditto, mahogany tube 17 6 6

Ditto, ditto, brass tube 19 8 6

Ditto all in brass, with rack-work motions, &c. 24 3 0

Achromatic perspective glasses for the pocket, in brass,
&c. tubes, with a change of eye-glasses, from 12s. to 3 3 0

New-improved ditto, answering the purpose of an
opera-glass, with a compass, and helioscope for viewing
the sun, from 1l. 3s. to 2 2 0

New-improved achromatic pocket telescope, which, by a
small apparatus within its tubes, is readily converted
into a compound microscope 3 13 6

An improved portable seven-inch achromatic telescope in
brass, with a stand that packs up into the tube of the
telescope, adapted for astronomical uses 3 13 6

REFLECTING TELESCOPES, fitted up either upon the
_Gregorian_, _Newtonian_, or _Herschelian_ principles,
with improved wood, or metal stands, and other apparatus
for making celestial observations in the most commodious
and accurate manner--The general prices are as follow:

-- Fifteen feet in length, the large metal fifteen inches
in diameter, from 250l. to 500 0 0

-- Twelve feet in length, fourteen inch metal 200 0 0

-- Ten feet in length, twelve inch metal 150 0 0

-- Eight feet in length, eleven inch metal 140 0 0

-- Six feet in length, nine inch metal 100 0 0

-- Four feet long, in brass tubes, with portable brass
or mahogany framed stands, from 40l. to 100 0 0

_Those reflectors that are constructed upon the principles of_ Newton
_or_ Herschel _are about twice the above lengths in the tubes. The
reflectors upon the usual Gregorian construction are made with the
vertical motion upon a new principle, so as to render them more firm
and steady while in use, than any reflectors mounted in the old
manner._

A four feet seven inch aperture Gregorian reflector, with
the vertical motion upon a new invented principle, as
well as apparatus to render the tube more steady in
observation; according to the additional apparatus of
small speculums, eye-pieces, micrometers, &c. from 70l.
to 100 0 0

Three feet long, mounted on a brass stand, common
mounting 23 2 0

Ditto with rack work motions, improved mounting, and
metals 36 15 0

Two feet long, without rack-work, and with four
magnifying powers, improved, 13l. 13s. to 14 14 0

Ditto improved, with rack-work motions 22 1 0

Eighteen inch on a plain stand 8 8 0

Twelve inch ditto 5 5 0

Telescopes of both the above kinds fitted up. with
equatorial, &c. motions, micrometers, adjusting,
compensating, &c. apparatus, for the most accurate
astronomical purposes.

Common MICROSCOPES, from 2s. 6d. to 1 1 0

Wilson’s single pocket microscopes, from 18s. to 2 12 6

Compound microscopes improved, from 2l. 12s. 6d. to 5 5 0

New improved universal ditto 6 6 0

Ditto with the most complete apparatus 10 10 0

Solar microscopes in brass, improved, from 4l. 14s. 6d.
to 6 6 0

The new opake and transparent solar microscopes, with
improved apparatus, from 10l. 10s. to 16 16 0

Ditto of a larger size, with additional megalascopic
apparatus, from 14l. 14s. to 19 19 0

Ditto, and best compound ditto, packed together in one
mahogany box 21 0 0

The LUCERNAL MICROSCOPE, as improved by W. JONES,
exhibiting images of opake and transparent objects by
night or day, in a manner singularly pleasing, brilliant
and distinct, with upwards of 100 objects, proper
apparatus, patent lamp, &c. 16 16 0

Ditto combined with a solar, compound, &c. apparatus,
forming the most perfect collection of microscopical
apparatus 35 14 0

A portable optical apparatus, consisting of a scioptic
ball and socket, a solar microscope, Wilson’s microscope,
a pocket compound microscope, a pocket telescope, and
solar telescope, in mahogany and brass 3 13 6

Pocket microscopes for opake objects, from 16s. to 2 12 6

Botannic microscopes for flowers, &c. from 5s. to 1 11 6

A new universal pocket ditto, adapted to all sorts of
objects 1 6 0

Cloth microscopes, from 2s. 6d. to 0 10 6

Magic lanthorns, from 1l. 4s. to 1 8 0

Sliders for ditto in great variety of subjects, each 0 3 6

A new set of moveable painted sliders, shewing the
fundamental principles of astronomy, with the real and
apparent motions and positions of the planets, stars, &c.
&c. accompanied by a proper improved lanthorn, complete 13 13 0

Small magic lanthorns, with twelve sliders complete, at
7s. 6d. 10s. 6d. 12s. and 1 0 0

Ditto with twelve sliders of best English paintings 2 2 0

Optical diagonal machines for viewing prints, from 1l. to 1 11 6

Perspective views in great variety for ditto, each 0 1 6

Scioptic balls and sockets from 10s. 6d. to 1 11 6

An artificial eye in brass, to exemplify the nature of
vision 1 11 6

_For a description of this instrument, as well as of spectacles,
reading-glasses, &c. see the late Mr._ G. ADAMS’S Essay on Vision,
_8vo. price 3s. now sold by_ W. _and_ S. JONES.

Camera obscuras for the pocket, from 9s. to 1 16 0

A new invented folding ditto, very portable 2 2 0

Large ditto, shutting up like a book, or neat portable
chest, the objects represented on paper, from 4l. 14s.
6d. to 8 18 6

Concave and convex glass mirrors, in plain black frames,
four, five, six, and seven inches diameter, each 9s. 12s.
14s. and 0 18 0

Eight inches diameter ditto 1 1 0

Nine inches ditto 1 7 0

Ten inches ditto 1 12 0

Twelve inches ditto 2 5 0

Fifteen inches ditto 3 13 6

Eighteen inches ditto 6 6 0

Twenty-one inches ditto 11 11 0

Twenty-four inches ditto 16 16 0

Concave mirrors, ground cylindrically, possessing several
curious properties in the deformation of objects,
according to the size, from 1l. 1s. to 5 5 0

Concave metal burning mirrors, superior to the glass ones,
from 3l. 13s. 6d. to 21 0 0

Glass prisms, plain, or mounted on stands, from 7s. 6d.
to 1 11 6

A curious set of optical models, where the rays of light
are represented by silken strings, and illustrating the
principles of vision, telescopes, prisms, &c. packed in
five cases 6 16 6

MATHEMATICAL INSTRUMENTS.

THEODOLITES of the common construction, and of the best
workmanship, from 4l. 4s. to 31 10 0

A portable theodolite, with a telescope, level, and
vertical arch 7 7 0

Ditto larger, with parallel plates, &c. divided to two
minutes 12 12 0

Ditto with rack-work motions, divisions to a minute 22 1 0

A new-improved theodolite, with two telescopes, and
contrivances for every accurate adjustment 36 15 0

A new very portable theodolite, by rack-work, measuring
angles with equal accuracy as those of the common large
sort, is at the same time applicable for taking
altitudes, and is truly adapted for the purpose of
levelling 8 8 0

A 4-inch further improved ditto, by which the vertical
and horizontal angles are shewn at the same time, with
portable staves, &c. 10 10 0

Circumferentors, much used in wood lands, from 2l. 2s. to 4 4 0

An improved ditto, contrived to answer the purposes of a
common theodolite, level, altitude instrument, &c. 4 14 6

Surveying crosses or squares, on a staff, from 12s. to 1 11 6

A brass cylindrical ditto, with a staff 0 18 0

Ditto with compass, agate capped needle, &c. 1 11 6

Improved ditto, with rack-work and pinion, and moveable
divided limb, making a very portable cross-staff, compass
and theodolite in one instrument 2 18 0

Levels of the latest improvements, from 2l. 2s. to 12 12 0

Station staves, with sliding vanes, for levelling 2 12 6

Plane tables, with index, sights, &c. complete, from 3l.
13s. 6d. to 5 5 0

Pentagraphs, by which any person unskilled in drawing may
copy plans, surveys, profiles, drawings, &c. in any
proportion to the original, from 1l. 16s. to 6 16 6

Perambulators or measuring wheels, from 61. 6s. to 10 10 0

Gunter’s measuring chain, according to strength, from
5s. to 0 11 0

---- navigation scale, from 2s. to 0 4 0

---- ditto improved by Donn, with book of directions 0 5 0

---- ditto improved by Robertson, with brass adjusting
screws, &c. being the completest scale of the kind 1 10 0

---- sectors of various lengths, from 2s. to 1 11 6

A new pocket ten inch box sliding rule for solving all
sorts of problems in trigonometry, &c. from 2s. 6d. to 0 4 0

Measuring tapes, one, two, three, and four poles, 5s.
7s. 6d. 9s. 0 10 6

Pedeometers for ascertaining distances in walking or
riding, of a watch size for the pocket, and also to apply
to carriages, from 31. 3s. to 12 12 0

Miner’s compasses, for working in subterraneous grounds,
from 10s. 6d. to 1 11 6

Cases of drawing instruments, from 4s. 6d. to 5 5 0

Magazine, or complete collection of every kind of useful
drawing instruments, from 5l. 5s. to 35 0 0

A new portable drawing board and seat, the board folds
up for the pocket, and the legs of the seat form a
walking stick 0 18 0

Proportional compasses, from 1l. 10s. to 3 3 0

Elliptical compasses of various degrees of perfection
and utility, from 16s. to 4 14 6

Spiral and elliptical compasses, from 6s. 6d. to 10 10 0

Triangular compasses, by which three points at once may
be transferred, from 13s. to 1 5 0

Hair compasses that take extents to a great accuracy 0 7 6

Beam compasses for dividing large circles, projections,
&c. from 1l. 1s. to 10 0 0

Bow compasses for describing very small circles, from
2s. 6d. to 0 12 0

Perspective compasses to take angles, &c. from 1l. 5s.
to 2 12 6

Parallel rulers of different constructions, from 2s. to 2 12 6

Protractors for laying down angles, from 2s. to 1 1 0

Ditto, with a nonius and moveable limb 2 2 0

Ditto, ditto, with teeth and pinion 4 10 0

Sets of protracting and plotting scales; instruments for
dividing lines or transferring divisions on paper. An
instrument for describing circles from four to six inches
radius, or to the utmost conceivable distance--Gunners
callipers--Gunners levels or perpendiculars--Shot
gauges--Shell ditto--Gunners quadrants, with a plummet or
level, or adjusting screw, &c. and all other instruments
for military purposes.

HADLEY’S QUADRANTS, mahogany, the divisions on wood 1 11 6

Ditto mahogany with ivory arch and nonius, double
observation 2 2 0

Ditto, ditto, a brass index, double observation 2 12 6

Ditto, ebony and brass, best glasses, engine divided, &c. 3 0 0

Ebony and brass mounted best sextants, from 4l. 4s. to 8 18 6

Metal ditto, all brass, framed on a principle the least
liable to be warped or strained, with adjusting screws,
telescopes, and other auxiliary apparatus, the most
proper for taking distances accurately, to determine the
longitude at sea, &c. 12 12 0

Ditto, second best 8 8 0

A new small 3-inch pocket box sextant to take angles to a
minute, from 2l. 2s. to 3 3 0

Artificial horizons, by parallel glasses and quicksilver,
to take double altitudes by 1 16 0

Gunter’s quadrant, from 4s. to 1 1 0

Azimuth compasses of different constructions, from 5l.
5s. to 12 12 0

Pocket compasses from 2s. 6d. to 5 5 0

Horizontal sun-dials, in brass, made for any latitude, of
four, five, or six inches diameter, divided into five
minutes of time, each at 6s. 9s. and 0 12 0

Ditto seven inches 0 16 0

Ditto eight inches, into two minutes 1 4 0

Ditto ten inches, ditto 1 16 0

Ditto twelve inches, ditto 2 10 0

Ditto, fifteen inches, into every minute, thirty-two
points of the compass, &c. 4 14 6

Ditto eighteen inches, ditto, ditto, with equation table,
&c. 8 8 0

Ditto 2 feet diameter, ditto, ditto 15 15 0

A new universal ditto and equatorial, making a very
portable angular instrument, from 8l. 8s. to 31 10 0

Universal ring dials, from 7s. 6d. to 10 10 0

_For a general description and representation of the instruments used
in surveying, levelling, and other branches of practical geometry, see
the late Mr._ G. ADAMS’S Geometrical and Graphical Essays, _an
improved edition by_ W. JONES, _in two vols, 8vo. 1797, with
thirty-five folio copper-plates. Price 14s._

ASTRONOMICAL, &c. INSTRUMENTS.

A portable TRANSIT INSTRUMENT, with a cast iron stand,
to ascertain the rate of chronometers, the longitude, &c.
the axis is twelve inches in length, and the telescope
about twenty inches, packed in a case 12 12 0

Ditto, with a brass framed stand, and other additions 20 0 0

Transit instruments of larger dimensions made to order.

The new CIRCULAR INSTRUMENTS and EQUATORIALS, from 63l.
to 180 0 0

Planetariums, shewing the phænomena of the Ptolemaic and
Copernican systems, from 7l. 7s. to 50 0 0

Manual orreries of the common construction from 2l. 12s.
6d. to 6 6 0

Jones’s (Wm.) new portable orrery, the tellurian part 1 1 0

Ditto, the planetarium part 1 1 0

Tellurian and planetarium together, making the _New
Portable Orrery_, packed in a neat mahogany box,
according to the sizes, from 2l. 12s. 6d. to 5 5 0

An orrery shewing the motions of Mercury, Venus, the
Earth and Moon, by wheel-work, the Earth is a 1¹⁄₂ inch
globe, packed in a box 4 4 0

Other planetariums and orreries in great variety, the
motions by wheel-work, exemplifying all the motions and
phænomena of all the planets, the Georgium Sidus
included, from 40l. to 1000 0 0

Cometariums, for exemplifying the motion of comets,
from 1l. 11s. 6d. to 5 5 0

Senex’s globes improved, twenty-eight inches diameter,
mahogany frames, from 25l. to 50 0 0

Twelve inch ditto, improved by Ferguson, with all the
new discoveries of Capt. Cooke, &c. with the new hour
circles, which supersede all the intended advantages of
cumbersome wires, and other appendages, in other globes,
mounted in neat mahogany claw-feet frames 5 5 0

Ditto, in common coloured wood frames 3 3 0

Additional price of a compass, and fitting to both globes 0 5 0

A pair of red leather covers for the globes 0 9 6

Globes, nine inches diameter, with the new discoveries 2 2 0

Ditto, three inches ditto, in claw-feet, mahogany frames 1 10 0

Ditto, three inches single, one in a case for the pocket 0 9 0

Geographical planispheres, to solve problems, mounted as
a hand fire-screen 0 7 6

A brass armillary sphere, three inches diameter 3 3 0

A six inch ditto 6 6 0

A nine inch ditto 9 9 0

A twelve inch ditto 12 12 0

Larger ditto, with planetarium, from 21l. to 105 0 0

_For a general description of orreries and other astronomical
instruments, see the late Mr._ G. ADAMS’S Astronomical Essays, _8vo.
with sixteen plates; price 10s. 6d. now sold by_ W. _and_ S. JONES.

PHILOSOPHICAL, &c. INSTRUMENTS.

A single-barrel AIR PUMP, with receiver 2 12 6

Improved ditto, exhausting more accurately 5 15 6

A small double-barrel air pump, with gage plate 5 5 0

A middle size ditto 6 16 6

A large size table ditto 10 10 0

Air pumps of the largest sort, exhausting more accurately,
from the constructions of the different inventors.

Condensing engines, from 5l. 5s. to 21 0 0

Papin’s digester improved, on a stand 5 15 6

_The principal Apparatus for the Air Pump as follow_:

Guinea and feather apparatus, demonstrating the
resistance of the air, with one, two, or three falls,
from 18s. to 1 11 6

A set of wind-mills, for the same demonstration 1 11 6

The brass hemispheres, shewing the air’s external
pressure, from 14s. to 1 10 0

A bell, proving that there is no sound without air 0 10 6

Improved constructions of this bell, from 1l. 1s. to 3 3 0

Lead weights, with bladder, &c. proving the air’s
elasticity 0 17 0

The double transferrer, that transfers a vacuum from one
receiver to another, by turning stop-cocks only 3 0 0

A model of a water-pump, exemplifying the nature of pumps,
and proving the absurdity of what is called suction 1 4 0

A single transferrer, plate and pipe, for a fountain 0 18 0

A copper air-pipe for experiments on infected air 0 17 0

A flat plate, collar of leathers, with sliding wire, for
placing on receivers 0 12 0

An apparatus for firing gun-powder in vacuo 0 18 0

A copper bottle, beam and stand, for accurately weighing
of air 2 12 6

A glass vessel for making a fountain in vacuo 0 5 6

Ditto on a larger, and different construction 0 16 0

A glass with a bladder, shewing the action of the lungs 0 6 0

Ditto mounted with the figure of a Bacchus 1 10 0

A balance beam and stand 0 7 0

A filtering cup shewing the porosity of vegetables 0 5 0

A plate and piece of wood for the same purpose 0 4 6

An apparatus for striking flint and steel in vacuo 0 18 0

The Torricellian experiment 0 18 0

Fruit stand 0 3 6

Candlestick 0 3 6

Syringe with lead weight 0 10 6

Six breaking squares, cage and cap 0 7 6

Glass bubble and stand 0 3 0

Hand and bladder glasses 0 3 6

With a great variety of receivers, and other apparatus,
described by various authors.

Exhausting and condensing syringes, from 10s. 6d. to 1 11 6

Exhausting syringes, with sets of cupping glasses, breast
glasses, and scarificator, complete 4 14 6

Air fountains of copper, with various jets, from 3l. 13s.
6d. to 7 7 0

ELECTRICAL MACHINES, with conductors and jars, from 2l.
12s. 6d. to 10 10 0

New and much improved ditto, from 3l. 13s. 6d. to 42 0 0

Electrical machines and complete apparatus, for medical
purposes, packed in boxes, the cylinder from seven to ten
inches diameter, from 6l. 6s. to 12 12 0

An electrical machine, with apparatus for philosophical
experiments and medical uses, packed in a box, the
cylinder about eight inches diameter 8 18 6

_Apparatus for Electrical Machines as follow:_

Electrical batteries of combined jars, from 2l. 12s. 6d.
to 10 10 0

An universal discharger, with a press 1 8 0

A quadrant electrometer, with divided arch 0 7 6

Jointed dischargers, with glass handles 0 10 6

Plain ditto, ditto 0 5 6

An useful and illustrative apparatus, compounded of the
luminous conductor, exhausted flask, two jars, exhausted
syringe, insulated stand, and wires with balls, &c.
complete 3 0 0

Luminous conductors, from 12s. to 1 5 0

Exhausted flasks, called Aurora Borealis 0 6 6

A thunder house, demonstrating the use of conductors 0 6 0

A powder house, for the same purpose 0 16 0

An obelisk or pyramid for ditto 0 10 6

A set of plain bells, three to a set 0 7 6

A new set of musical ditto, containing the gamut 1 10 0

A magic picture for giving shocks 0 7 6

An electrical cannon, to be discharged by inflammable air 0 16 0

Brass pistols for ditto 0 7 6

Spiral tubes, to illuminate by the spark, from 4s. 6d. to 0 10 6

Luminous names, or words, from 10s. 6d. to 1 11 6

Spotted jars, from 6s. to 0 10 6

A double jar for explaining the Franklinian theory 0 15 0

Copper plates and stands for dancing images 0 9 0

An electrical tin fire house 0 10 6

An electrical shooter and mark 0 5 0

A mahogany stand for eggs 0 4 6

A small head with hair 0 7 6

An artificial spider 0 1 6

An electrical swan 0 2 0

An electrical star 0 1 6

Balls of wood, bone, &c. each from 6d. to 0 2 6

A curious collection of working models, to be set in
motion by the electrical fluid, consisting of a corn mill
and a three-barrelled water-pump, worked by one crank
only: an orrery, shewing the diurnal motion of the earth,
age and phases of the moon, &c. and astronomical clock,
shewing the aspects of the sun and moon, age, phases, &c.
all delicately made of card paper, cork, and wire only,
packed in a deal case 2 12 6

Kinnersley’s electrical air thermometer 1 1 0

Cavallo’s atmospherical electrometer 0 12 0

Ditto, as improved by Saussure 1 1 0

Bennet’s gold leaf electrometer 0 18 0

Nicholson’s spinning doubler. 1 10 0

An electrophorus, from 10s. 6d. to 3 3 0

Conductors for the preservation of ships, houses, &c.
from lightning, from 3l. 3s. to 5 5 0

_The medical Apparatus consists of_,

Jars with electrometers, from 12s. to 1 1 0

A new medical ditto, for communicating shocks in the most
convenient and qualified manner 0 7 6

A pair of directors, glass handles, wood points, &c. 0 7 6

An electrometer to apply to the conductor 0 6 6

Electrical insulated stools and chairs, from 9s. to 5 5 0

A new perpetual inflammable air lamp, lighted by the
electrophorus, a curious and useful apparatus 4 4 0

A variety of other apparatus, too numerous to be inserted here, which
as well as the machines, are mounted from the most approved, eligible
methods, so as to render them in action both powerful and permanent.

_For a complete description of electrical apparatus, see the late Mr._
G. ADAMS’S Essay on Electricity, _8vo. six plates; price 6s. now sold
by_ W. _and_ S. JONES.

Barometers plain mounted from 1l. 11s. 6d. to 2 12 6

Thermometers for all the various purposes, from 9s. to 3 3 0

Six’s new thermometers, for shewing the extremes of heat
and cold, in the absence of the observer, from 1l. 11s.
6d. to 2 12 6

An hygrometer, shewing the moisture and dryness of the
air 0 10 6

Barometers, thermometers, and hygrometers, all in one
neat mahogany frame, from 4l. 4s. to 6 6 0

Barometers for measuring the heights of mountains from
7s. to 10 10 0

Marine barometers, diagonal, wheel, and statical ditto.

New hygrometers constructed by De Luc, &c. from 2l. 2s.
to 3 3 0

A rain gauge, with float and tin vessel 0 18 0

Wind gages, of the constructions of Dr. Lind, &c. 0 16 0

Hydrometers for discovering the strength and proportion
of compound in spirituous liquors, from 1l. 7s. to 3 3 0

Hydrostatic balances, from 1l. 1s. to 9 9 0

An apparatus for hydrostatical experiments, from 3l.
13s. 6d. to 21 0 0

Artificial magnets in bars, and sets of bars, from 2s.
6d. to 6 6 0

Ditto, in the shape of a horse-shoe, the strongest form,
from 1s. 6d. to 1 1 0

Ditto, combined to any number, from 12s. to 21 0 0

A box of magnetical apparatus illustrating a variety of
curious and entertaining properties in magnetism, from
5l. 5s. to 7 7 0

Dipping needles, variation, and other compasses, in great
variety.

Pyrometers, shewing the expansion of metals, from 3l. 3s.
to 10 10 0

The mechanical powers, for illustrating and demonstrating
the laws of motion, gravity, &c. a set neatly made in
brass, consisting of the balance, the pullies, the
different kinds of levers, the inclined plane, the wheel
and axle, the screw, a compound engine, a compound lever,
a double cone to move up an inclined plane, friction
wheels, weights, wedges, &c. complete 25 4 0

The same occasionally made on a more enlarged plan, for
a large auditory.

Ditto, with many parts of the apparatus made of mahogany,
and the whole set packed in a neat mahogany box 14 14 0

Separate sets of pullies, variously constructed and
combined.

A small carriage with inclined plane, and wheels of
different sizes, &c. experimentally proving the friction,
resistance, &c. of all sorts of wheel carriages 7 7 0

Ferguson’s compound engine, in which all the simple
mechanical powers work together 4 4 0

A whirling table, for explaining and demonstrating the
laws of the planet’s motion, the demonstrations of the
doctrine of the tides, and other properties of gravity
and centrifugal force, from 7l. 7s. to 16 16 0

Atwood’s elegant and accurate apparatus for
demonstrating the laws of accelerated and retarded
motion, and other interesting particulars 25 4 0

Several small mahogany models for explaining the center
of gravity, the line of direction, &c. 2 2 0

FOR PHILOSOPHICAL CHEMISTRY.

Glass bottles with bent necks, from 4s. to 0 10 6

A glass machine for impregnating water with fixed air,
and apparatus 2 12 6

Glass eudiometer tubes, for ascertaining the salubrity of
airs, &c. 0 10 6

Ditto as improved by Abbe Fontana, &c. 2 4 0

Gazometers by Priestley, Lavoisier, &c. from 1l. 1s. to 5 5 0

A blow-pipe, with various caps, for fluxing metals, &c. 0 7 6

Ditto, with silver spoon, megalascope, &c. 1 1 0

Ditto, ditto, with a variety of other necessary apparatus,
packed in a fish-skin case, forming Cronstedt’s complete
pocket laboratory, improved by Magellan 2 12 6

Magellan’s new portable lamp furnace, with the blow-pipe,
small glass retorts, &c. &c. for chemical as well as
mineralogical operations 4 14 6

Ditto, with the double bellows to apply to the blow-pipe 7 7 0

Double bellows, with deal table, and appendages, for
glass blowing 2 12 6

A wooden tub for water, and another for quick-silver,
with a selection of glass apparatus for performing the
late discovered experiments on air 6 6 0

A box, containing all the useful precipitants of Bergman,
&c. for analysing waters, and fluxes for the blow-pipe in
phials with glass stoppers, with Gottling’s printed
description of ditto 4 8 0

A mahogany case containing, in phials, a variety of
preparations for young persons to perform amusive and
instructive chemical experiments 3 13 6

Fumigating bellows for destroying insects in gardens, by
tobacco, from 1l. 6s. to 1 16 0

_Instruments of Recreation and Amusement._

The sensitive fishes, that have the property of swimming
to a piece of bread placed at the end of a stick; and,
when the other end is presented, of retreating and going
back, sensible, as it were, of no substance for them to
eat 0 6 6

The sagacious swan, that with a machine makes three
kinds of amusements--1st. the swan will point out the
secrets of the cards; 2d. it will point answers to 16
humorous enigmas; and 3d. disclose any particular hour
that was thought of, such as going to bed or rising;
packed in a case 1 18 0

A box containing four numbers and four letters, the order
of which may be discovered, if ever so secretly placed,
by means of a curious magic perspective 0 10 0

Ditto with five numbers, no perspective, but another very
similar box, made in neat mahogany boxes, and more
difficult to discover the reason of 1 18 0

A curious magic oracle, unfolding answers to any proposed
questions secretly taken out of a bag 0 16 0

A magic painter, exhibiting a copy of any one of eight
different paintings secretly chosen 0 10 6

A communicative mirror, shewing portraits of any one of
four secretly chosen; an elegant and curious instrument 2 12 6

A box containing five pieces of different metals, which
may any way be secretly placed, and their situation be
told by the magical perspective 1 8 0

An optical paradox, containing two perspectives, between
which a board may be placed, and the object will be seen
through them just as well as if the board was not there 0 7 6

Ditto mounted in mahogany, larger size 1 8 0

An optical deception, containing from six to twelve
different paintings, and which are looked down upon
through a perspective, and immediately there appears
another very different object, without any alteration of
the instrument whatsoever, or concern of the person
using it, from 1l. 11s. 6d. to 3 3 0

A diagonal opera glass, that shews persons on one side,
when the glass is presented to the object directly
before you, from 6s. to 0 15 0

A multiplying glass, making one object appear a great
number, from 1s. 6d. to 0 10 6

A set of anamorphoses or deformed pictures rectified by
a polished cylinder 2 2 0

A mathematical recreation, containing near seventy
figures on a card; any one figure being thought of, is
readily pointed out by any one using it 0 1 0

The two curious mathematical cubes, one of which is
gauged so as to prove it to be larger than the other,
yet the _larger_ one will actually _pass through_ the
smaller one, and not in any degree stretch it 1 0 0

The mathematical paradox, a piece of wood of one figure,
fits exactly, and passes through a triangular, a square,
and a circular hole 0 2 6

A double cone, that apparently rolls upwards up an
inclined plane, though actually descending 0 4 6

A magic well, in which may be put four buckets full of
different seeds, and fairly mixed together; any
particular seed of the above four kinds may be drawn up
separately, and, when examined, will be found to be
perfectly pure 1 11 6

A mechanical instrument, consisting of a cube and two
wooden handles, that supports itself on a point,
although the entire form and weight appear evidently
all on one side 0 12 0

A cylindrical mirror that produces two or three curious
optical effects 1 1 0

A magic or electrical bottle, that is charged by the
rubbing of a ribband only, and will give a shock to five
or six persons, with apparatus, in a pocket case 0 10 6

A set of the artificial fireworks imitated, containing
a series of brilliant and entertaining scenes of
fireworks, cascades of fire, &c. producing altogether a
pleasing effect, and not attended with any trouble,
noise, or danger, when using; the whole contained in a
neat mahogany box 7 7 0

The magic lanthorn apparatus conjoined with the above 10 10 0

Concave mirrors fitted up in boxes, to magnify prints,
to shew various deceptions in an entertaining and
pleasing manner, from 5l. 5s. to 12 0 0

* * * * *

Besides the preceding, a great variety of other articles too numerous to be included in this catalogue, as well as any instrumental article made from particular drawings, or as described by the different writers upon mathematics, philosophy, chemistry, &c. &c.

* * * * *

Merchants, shopkeepers, schoolmasters, and others that sell again, are supplied with the best articles, and with good allowance.

Letters from the country or abroad, containing orders or previous enquiries, explicitly and punctually attended to.

_Les académies, observatoires et ecoles des pays etrangers ainsi que les négociants, merchands et autres personnes peuvent se procurer toutes sortes d’instruments de la meilleure qualité, tant pour les matériaux, que la main d’œuvre, avec la plus grande expédition, et au plus juste prix._

BOOKS PUBLISHED BY W. JONES.

A Description and Use of the New Portable Orrery, to
which is prefixed a short account of the solar system,
including the new planet, the burning mountain in the
moon lately discovered by Dr. Herschel, and the probable
reasons why the comet did not appear, as lately expected,
with two copper-plates, 4th edition 0 1 6

A Description and Use of the Hadley’s Quadrant, with an
account of all the new apparatus added to it, for taking
observations accurately, in order to determine the
longitude at sea, illustrated by copper-plate figures,
2d edit. 0 1 0

A Description and Use of the Pocket Case of Mathematical
Drawing Instruments, illustrated by copper-plate figures 0 0 8

Methods of finding a Meridian Line, to set sun-dials,
regulate clocks and watches, &c. 0 0 6

Directions for finding a Meridian Line, on a card 0 0 3

A Concise Explanation of the Barometer, Thermometer, and
Hygrometer, with rules for predicting changes in the
weather, in a small book, 6d. on a pasteboard, varnished 0 1 0

Cowley’s Illustration of SOLID GEOMETRY, containing 42
copper-plates of moveable figures; a work very useful
and convenient for teachers and young students of
geometry, as the figures, when folded up, form exactly
the solid figures of the Platonic bodies, conic sections,
and several portions of Euclid’s Elements, &c. &c. boards 0 18 0

OTHER BOOKS SOLD BY W. AND S. JONES.

QUARTO.

The New Encyclopædia Britannica (printed at Edinburgh) a
new edition, quarto, in 18 vols, or 36 parts, now
complete, in boards price 18 18 0

This Dictionary of Arts and Sciences is upon a new and enlarged plan,
and contains the systems of the different arts and sciences, under the
different heads, as well as the explanations of the various detached
terms.

Hutton’s (Dr.) Mathematical Dictionary, 2 vols. boards 2 12 0

Nicholson’s Philosophical Journal, four numbers, all that
are now published, each 2s. 6d. 0 10 0

The Philosophical Transactions of the Royal Society,
containing 11 vols. of the Abridgement; and from thence,
the Continuation at large to the present time; the index,
with Birch’s and Sprat’s history, 5 vols. all in uniform
clean calf binding and tooled backs, in 58 vols. 60 0 0

Vince’s Treatise on Astronomy, 1st vol. sewed 1 4 0

OCTAVO.

Cavallo’s Treatise on Magnetism, with Supplement 0 8 0

Kelly’s Practical Introduction to Spherics and Nautical
Astronomy 0 6 0

Moore’s Practical Navigator, or Seamen’s Daily Assistant 0 6 0

Nicholson’s First Principles of Chemistry, boards 0 7 6

---- Introduction to Natural Philosophy, 2 vols. 0 12 0

Nautical Almanacks, a complete set bound, 28 volumes 5 5 6

Ditto for any year to 1800 0 3 6

Requisite Tables to the above, unbound 0 5 0

Robertson’s Elements of Navigation, new edit. 2 vols. 1 0 0

Wale’s Method of finding the Longitude by Time-keepers,
and Description of a Portable Transit Instrument, &c. 0 2 6

FINIS.

LONDON, _Dec._ 1, 1797

W. _and_ S. JONES _take this Opportunity of informing the Public that
they have purchased the Stock and Copyright of the several
Philosophical Essays by the late Mr._ GEORGE ADAMS, _of Fleet Street,
and that they are now sold at their Shop in Holborn. The following are
those now in print, and to be had as above._