Chapter D: FRISBIE & CO., New Haven, Conn

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Engraving Process!!!!

Perfect Substitute for Wood-Cuts.

Photo-Plate Company

63 Duane St. New York.

Can be printed on an ordinary Press.

RELIEF PLATES in hard Type Metal FOR Newspaper & Book Illustration.

Send Stamp for Illustrated Circular.

MUCH CHEAPER THAN WOODCUTS.

ARTISTIC PRINTING.

FINE ELECTROTYPING.

State where you saw this.
]
----------------------------------------------------------------------

=$4. TELEPHONES=

For Business Purposes, ours excel all others in clearness and volume
of tone. Illus. circular and testimonials for 3 cts.

Address J. R. HOLCOMB, Mallet Creek, Ohio.
----------------------------------------------------------------------
EXPLOSIVE DUST. A COMPREHENSIVE description of the Dangers from Dust
in various Manufactures and the Cause of many Fires. How combustible
substances can explode. Spontaneous Combustion of Iron, Charcoal, and
Lampblack in Air. Flour Dust and Brewery Dust Explosions. Explosions
of Coal Dust in Mines. Contained in SCIENTIFIC AMERICAN SUPPLEMENT
NO. =125.= Price 10 cents. To be had at this office and of all
newsdealers.
----------------------------------------------------------------------
=Can I Obtain a Patent?=

This is the first inquiry that naturally occurs to every author or
discoverer of a new idea or improvement. The quickest and best way
to obtain a satisfactory answer, without expense, is to write to us
(Munn & Co.), describing the invention, with a small sketch. All we
need is to get the _idea_. Do not use pale ink. Be brief. Send stamps
for postage. We will immediately answer and inform you whether or
not your improvement is probably patentable; and if so, give you the
necessary instructions for further procedure. Our long experience
enables us to decide quickly. For this advice we make _no charge_.
All persons who desire to consult us in regard to obtaining patents
are cordially invited to do so. We shall be happy to see them in
person at our office, or to advise them by letter. In all cases, they
may expect from us a careful consideration of their plans, an honest
opinion, and a prompt reply.

_What Security Have I_ that my communication to Munn & Co. will be
faithfully guarded and remain confidential?

_Answer._-You have none except our well-known integrity in this
respect, based upon a most extensive practice of thirty years'
standing. Our clients are numbered by hundreds of thousands. They
are to be found in every town and city in the Union. Please to
make inquiry about us. Such a thing as the betrayal of a client's
interests, when committed to our professional care, never has
occurred, and is not likely to occur. All business and communications
intrusted to us are kept _secret and confidential_.

Address =MUNN & CO.,=
Publishers of the SCIENTIFIC AMERICAN,
=37 Park Row New York.=
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=Advertisements.=
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=Inside Page, each insertion - - - 75 cents a line.
Back Page, each insertion - - - $1.00 a line.=
(About eight words to a line.)

_Engravings may head advertisements at the same rate per line, by
measurement, as the letter press. Advertisements must be received at
publication office as early as Thursday morning to appear in next
issue._
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=TELEPHONES,=

Perfect working, at reduced prices. Send for illustrated circular to
=TELEPHONE SUPPLY CO.,=
=Box 3224, Boston, Mass.=
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=LIQUID PAINTS, ROOFING, BOILER COVERINGS,=
Steam Packing, Sheathings, Fire Proof Coatings, Cements.
SEND FOR SAMPLES, ILLUSTRATED PAMPHLET AND PRICE LIST.
=H. W. JOHNS M'F'G Co., 87= MAIDEN LANE, N. Y.
----------------------------------------------------------------------
=Mill Stones and Corn Mills.=

We make Burr Millstones, Portable Mills, Smut Machines, Packers, Mill
Picks, Water Wheels, Pulleys, and Gearing, specially adapted to Flour
Mills. Send for catalogue.

=J. T. NOYE & SON, Buffalo, N. Y.=
----------------------------------------------------------------------

=WARRANTED THE BEST.
1 H. P. Boiler & Engine, $150.
2 H. P., $175. 3 H. P., $200.=

Tested to 200 lbs. Steam.

=LOVEGROVE & CO.,
152 N. 3d St., Philadelphia, Pa.,=

Builders of Engines and Boilers, 1 to 100 horse power. Send for
circulars and prices, and state size and style you want.
----------------------------------------------------------------------
ESTABLISHED 1844.

=JOSEPH C. TODD,=

ENGINEER and MACHINIST. Flax, Hemp, Jute, Rope, Oakum and Bagging
Machinery, Steam Engines, Boilers, etc. I also manufacture Baxter's
New Portable Engine of 1877. Can be seen in operation at my store. A
one horse-power, portable engine, complete, $125; two horse-power,
$225; two and a half horse-power, $250; three horse-power, $275.
Manufactured exclusively by

=J. C. TODD,=
10 Barclay St., New York, or Paterson, N. J.
----------------------------------------------------------------------
=CAMERON=
=Steam Pumps=

For Mines, Blast Furnaces, Rolling Mills, Oil Refineries, Boiler
Feeders, &c.

For Illustrated Catalogue and _Reduced_ Price List send to =Works, Foot
East 23d St., New York.=
----------------------------------------------------------------------

Address JOHN A. ROEBLING'S SONS, Manufacturers, Trenton, N. J., or 117
Liberty Street, New York.

Wheels and Rope for conveying power long distances. Send for circular.
----------------------------------------------------------------------
=$1200 Salary.= Salesmen wanted to sell our Staple Goods to dealers.
No peddling. =Expenses= paid. Permanent employment. address S. A.
GRANT & CO., 2, 4, 6 & 8 Home St., Cincinnati, O.
----------------------------------------------------------------------
_Working Models_

And Experimental Machinery, Metal or Wood, made to order by
J. F. WERNER, 62 Centre St., N. Y.
----------------------------------------------------------------------
B. W. Payne & Sons, Corning, N. Y.
Established in 1840.

Eureka Safety Power.

|h.p. cyl. ht. space. wt. price.
-------------------------------------------
| 2 |3-1/8x4| 48 in.| 40x25 | 900 | $150 |
-------------------------------------------|
| 4 | 4x6 | 56 | 46x30 | 1600 | 250 |
-------------------------------------------|
| 6 | 5x7 | 72 | 72x42 | 2700 | 400 |
-------------------------------------------
|_Also_, =SPARK ARRESTING PORTABLES=, _and_|
| =Stationary Engines= _for Plantations_. |
| Send for Circulars. |
----------------------------------------------------------------------
Patent Wood-working Machinery, Band Saws Scroll Saws, Friezers, etc.
Cordesman, Egan & Co., Cincin'ti, O.
----------------------------------------------------------------------
=CORLISS ENGINES.=

Beam, horizontal, vertical, condensing, and non-condensing Steam
Engines.

=Machine Tools, Sugar Machinery.=

=Facilities for Constructing Heavy Machinery.=

Send for Circular.

PASSAIC MACHINE WORKS,
WATTS, CAMPBELL & CO., Proprietors,
Newark, N. J.
----------------------------------------------------------------------

THE ONLY Genuine GEISER SELF-REGULATING GRAIN SEPARATOR. Celebrated
for its light and smooth movements, also SEPARATING and CLEANING all
kinds of grain.

Manufactured only by
THE GEISER M'F'G CO., Waynesboro, Franklin Co., Pa.
----------------------------------------------------------------------
=CIGAR BOX LUMBER,=

Manufactured by our new

=Patented Processes.=

Poplar 1¼c.
Mahogany 2½c.
Spanish Cedar Veneers ½c.
Spanish Cedar, 2d quality 2¾c.
" 1st and 2d quality 3¼c.
" 1st " 3¾c.
No charge for cartage. Terms cash.

=GEO. W. READ & CO.,=
=186 to 200 Lewis Street, New York.=
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=BELT PULLEY,=

Lightest, strongest, and best made. Secured to the Shaft without Keys,
Set Screws, Bolts or Pins; also, _Adjustable Dead Pulleys_ and
_Taper-Sleeve Couplings_. Send for catalogue. Address Taper-Sleeve
Pulley Works, Erie, Pa.
----------------------------------------------------------------------

=$3 Press= Prints labels, cards etc. (Self-inker $5) =9= Larger sizes
For business, pleasure, young or old Catalogue of Presses, Type,
Etc., for 2 stamps.

=KELSEY & Co.=
=Meriden, Conn=
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=Pyrometers=, For showing heat of Ovens, Hot Blast Pipes Boiler Flues,
Superheated Steam, Oil Stills, &c.

HENRY W. BULKLEY, Sole Manufacturer,
149 Broadway, N. Y.
----------------------------------------------------------------------
=ICE AT $1.00 PER TON.=
The PICTET ARTIFICIAL ICE CO.,
LIMITED,
Room 51, Coal and Iron Exchange, P. O. Box 3083, N. Y.
----------------------------------------------------------------------
LAP WELDED CHARCOAL IRON

Boiler Tubes, Steam Pipe, Light and Heavy Forgings, Engines, Boilers,
Cotton Presses, Rolling Mill and Blast Furnace Work.

=READING IRON WORKS,=
=261 South Fourth St., Phila.=
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=OPERA GLASSES= =At Reduced Prices.= Microscopes, Spectacles,
Telescopes, Thermometers. Send for Illustrated Catalogue.

R. & J. BECK,
921 Chestnut St., Philadelphia.
----------------------------------------------------------------------

WOOD-WORKING MACHINERY,
New and improved, for special work. Boring Machines, Turning Lathes,
Saw Arbors, Saw Benches, Scroll Saws, Panel Raisers, and other
Wood Tools. We build the only patented Panel Raiser, with vertical
spindles, all others being infringements on our patents of July 11
and October 31, 1871.

=WALKER BROS.,=
=_73 and 75 Laurel St., Phila._=
----------------------------------------------------------------------
ALCOHOLISM. AN INTERESTING Paper upon the Relations of Intemperance
and Life Insurance. The average Risks and Expectancy of Life of
the Temperate and of the Intemperate. Physiological action of
Alcohol; stimulating the Nervous System, Retarding the Circulation.
Alcohol Oxidized in the System. Insomnia, Congestion of the Lungs,
Deterioration of Structure, Calculus, and Liver Diseases as results
of Liquor. Extended Medical Testimony. Contained in SCIENTIFIC
AMERICAN SUPPLEMENT NO. =125.= Price 10 cents. To be had at this
office and of all newsdealers.
----------------------------------------------------------------------
=Telephones.=

How made, adjusted, and operated by any person. Send stamp for full
and interesting description, with illustrations and instructions. One
pair first-class Telephones complete, except diaphragms, sent to any
address upon receipt of $5. J.H. BUNNELL, Electrician,
112 Liberty St., New York.
----------------------------------------------------------------------
IMPORTANT FOR ALL CORPORATIONS AND MANF'G CONCERNS.--=Buerk's
Watchman's Time Detector=, capable of accurately controlling the
motion of a watchman or patrolman at the different stations of his
beat. Send for circular.

=J. E. BUERK, P. O. Box 979, Boston, Mass=

N. B.--The suit against Imhaeuser & Co., of New York, was decided in
my favor, June 10, 1874. A fine was assessed against them Nov. 11,
1876, for selling contrary to the order of the court. Persons buying
or using clocks infringing on my patent will be dealt with according
to law.
----------------------------------------------------------------------
THE HUGHES TELEPHONE. SIX FIGURES. Sound converted into Undulatory
Electrical Currents by Unhomogeneous Conducting Substances in
Circuit. The Simplest Telephone and the most sensitive Acoustical
Instrument yet constructed. Instrument for Testing the Effect of
Pressure on Various Substances. Astonishing Experiments which may
be performed by any person with a few nails, pieces of sealing wax,
a glass tube containing powders, and a few sticks of charcoal.
Contained in SCIENTIFIC AMERICAN SUPPLEMENT NO. =128.= Price 10
cents. To be had at this office and of all newsdealers.
----------------------------------------------------------------------

MANUFACT'D AT MOUNT HOLLY N. J.
----------------------------------------------------------------------
"OLD RELIABLE." TO KNOW ALL about the =Best Pump= for Paper Makers,
Tanners, Contractors, and for irrigation, send for illustrated
pamphlet, 78 pages. HEALD, SISCO & CO., Baldwinsville, N. Y.
----------------------------------------------------------------------
=BOOKS=, Papers. Want Agents. Send stamp. L. L. FAIRCHILD, Rolling
Prairie, Wis.
----------------------------------------------------------------------
=IT PAYS= to sell our Rubber Stamps and Novelties. Terms free. G. A.
HARPER & BRO., Cleveland, O.
----------------------------------------------------------------------
DYSPEPSIA. BY DR. C. F. KUNZE.
Symptoms. Appetite Diminished. Stomach
Digestion much slower than Normal. Constipation. Symptoms in Children.
Chronic Cases. Dyspepsia as caused by too much Food; by Indigestible
Food; by General Derangement; by Altered Conditions of Innervation.
Treatment. Nourishment should be Easily Digestible; taken Little at a
Time; and Digested before more is taken. Necessity of Few and Plain
Dishes. Treatment when Stomach is Overloaded. Aiding Gastric Juice.
Treatment in Febrile Diseases. Contained in SCIENTIFIC AMERICAN
SUPPLEMENT NO. =129.= Price 10 cents, To be had at this office and of
all newsdealers.
----------------------------------------------------------------------

=SHEPARD'S CELEBRATED=

$50 Screw Cutting Foot Lathe.

Foot and Power Lathes, Drill Presses, Scroll, Circular and Band Saws,
Saw Attachments, Chucks, Mandrills, Twist Drills, Dogs, Calipers, etc.
Send for catalogue of outfits for amateurs or artisans.

=H. L. SHEPARD & CO.,
88, 90 & 92 Elm St.,
Cincinnati, Ohio.=
----------------------------------------------------------------------
=TO ADVERTISERS!= We will send free to all applicants who do any
newspaper advertising, the THIRD EDITION of
=AYER & SON'S MANUAL=
=FOR ADVERTISERS.= 160 8vo. pp. More complete than any which have
preceded it. Gives the names, circulation, and advertising rates of
several thousand newspapers in the United States and Canada, and
contains more information of value to an advertiser than can be found
in any other publication. All lists have been carefully revised, and
where practicable prices have been reduced. The special offers are
numerous and unusually advantageous. Be sure to send for it before
spending any money in newspaper advertising. Address =N. W. AYER &
SON,= ADVERTISING AGENTS, Times Building, Philadelphia.
----------------------------------------------------------------------
=PORTLAND CEMENT,=

ROMAN & KEENE'S. For Walks, Cisterns, Foundations, Stables, Cellars,
Bridges, Reservoirs, Breweries, etc.

Remit 10 cents for Practical Treatise on Cements.

S. L. MERCHANT & CO., 53 Broadway, New York.
----------------------------------------------------------------------

=NORTH'S UNIVERSAL LATHE DOG.
S. G. NORTH
347 North 4th Street, Philadelphia, Pa.=
----------------------------------------------------------------------
=MACHINISTS' TOOLS.=
NEW AND IMPROVED PATTERNS.

Send for new illustrated catalogue.

Lathes, Planers, Drills, &c.
=NEW HAVEN MANUFACTURING CO.,
New Haven, Conn.=
----------------------------------------------------------------------
POINTS OF A GOOD HORSE. BEING the Report of the Committee appointed
by the New England Agricultural Society to decide upon Rules for
Guidance of Judges of Horses. The Points of Excellence. Size, Color,
Symmetry of Body, Head and Neck, Eye and Ear, Feet and Limbs, fully
described. Speed at the Trot, and in Walking, Style and Action, etc.,
with the percentage allowed for each quality. The Standard Size and
Speed for Matched Carriage Horses, Gents' Driving Horses, Family
Horses, Park or Phæton Horses, etc. An excellent Guide in selecting
animals. Contained in SCIENTIFIC AMERICAN SUPPLEMENT NO. =103=, price
10 cents. To be had at this office and of all newsdealers.
----------------------------------------------------------------------

="THE EAGLE CLAW."=
The best Trap in the World for catching
FISH, ANIMALS & GAME.

One bait will catch
=Twenty Fish=.

No. 1, for ordinary fishing, small game, &c. 35c.
No. 2, for large fish, mink, musk-rats, &c. 75c.
Sent by mail. =J. BRIDE & CO.,=
Mfrs., 297 Broadway, New-York.

Send for Catalogue of useful novelties and mention this paper.
----------------------------------------------------------------------
EMERY AND CORUNDUM WHEELS,
for Grinding and Surfacing Metals and other materials. By ARTHUR H.
BATEMAN, F. C. S. A paper read before the Society of Arts, London.
Files, Chisels, Grindstones, Composition of Emery, where found,
Quality, Specific Gravity, and Hardness, Manufacture of the wheels,
Emery Powder, Buffing, Polishing, Cutting Power, Corundum. The
Magnesian or Union Wheel, the Tanite, the Northampton, the Vulcanite,
the Climax, the Vitrified, a porous wheel with central water supply.
Fifty uses enumerated to which the wheels are put, for Metals,
Stone, Teeth, Millboard, Wood, Agate, and Brick. How to mount a
wheel. How to hold the work, and directions for various classes of
work. Discussion and questions proposed and answered. Contained in
SCIENTIFIC AMERICAN SUPPLEMENT, NO. =125=. Price 10 cents. To be had
at this office and of all newsdealers.
----------------------------------------------------------------------
=THE BIGELOW=
=Steam Engine.=

BOTH PORTABLE AND STATIONARY.

=The CHEAPEST AND BEST in the market. Send for descriptive circular
and price list.=

=H. B. BIGELOW & CO.,
New Haven, Conn.=
----------------------------------------------------------------------

Shaped or Crude, furnished and set for Boring Rocks, Dressing Mill
Burrs, Emery Wheels, Grindstones, Hardened Steel, Calender Rollers,
and for Sawing Turning, or Working Stone and other hard substances:
also Glaziers' Diamonds. J. DICKINSON, 64 Nassau St., N. Y.
----------------------------------------------------------------------
=SECOND-HAND ENGINES,=

Portable and Stationary, at Low Prices.

HARRIS IRON WORKS, TITUSVILLE, PA.
----------------------------------------------------------------------
HOW TO MAKE A PHONOGRAPH.

Full Instructions, with Eight Working Drawings, Half Size.
Construction easy and Inexpensive. These drawings are from an actual
working Phonograph; they show the sizes, forms, and arrangement of
all the parts. The explanations are so plain and practical as to
enable any intelligent person to construct and put a Phonograph in
successful operation in a very short time. Contained in SCIENTIFIC
AMERICAN SUPPLEMENT NO. =133.= Price 10 cents. To be had at this
office and of all newsdealers.
----------------------------------------------------------------------

----------------------------------------------------------------------
=_PERFECT_=
=NEWSPAPER FILE=

The Koch Patent File, for preserving newspapers, magazines, and
pamphlets, has been recently improved and price reduced. Subscribers
to the SCIENTIFIC AMERICAN and SCIENTIFIC AMERICAN SUPPLEMENT can be
supplied for the low price of $1.50 by mail, or $1.25 at the office
of this paper. Heavy board sides; inscription "SCIENTIFIC AMERICAN,"
in gilt. Necessary for every one who wishes to preserve the paper.

Address
=MUNN & CO.,
Publishers SCIENTIFIC AMERICAN.=
----------------------------------------------------------------------
THE TANITE CO.,
STROUDSBURG, PA.
=EMERY WHEELS AND GRINDERS.=
GEO. PLACE, 121 Chambers St., New York Agent.
----------------------------------------------------------------------

MANUFACTURED BY BURLEIGH ROCK DRILL CO.

SEND FOR PAMPHLET. · FITCHBURG MASS.
]
----------------------------------------------------------------------
=STEAM PUMPS.=

HENRY R. WORTHINGTON,

239 Broadway, N. Y. 83 Water St., Boston.

THE WORTHINGTON DUPLEX PUMPING ENGINES FOR WATER WORKS--Compound,
Condensing or Non-Condensing. Used in over 100 Water-Works Stations.

STEAM PUMPS--Duplex and Single Cylinder.

WATER METERS. OIL METERS.

=Prices largely Reduced.=
----------------------------------------------------------------------

----------------------------------------------------------------------
HARTFORD
STEAM BOILER
Inspection & Insurance
COMPANY.
W. B. FRANKLIN V. Pres't. J. M. ALLEN, Pres't.
J. B. PIERCE, Sec'y.
----------------------------------------------------------------------

=Patent Portable Chuck Jaws.=

Improved Solid Emery Wheels, for grinding Iron and Brass Castings,
Tools, etc. Manufactured by AM. TWIST DRILL CO., Woonsocket, R. I.
----------------------------------------------------------------------
=$7= A DAY to Agents canvassing for the =Fireside Visitor=. Terms and
Outfit Free. Address P. O. VICKERY, Augusta, Maine.
----------------------------------------------------------------------
=HAND SAW MILL= SAVES THREE MEN'S labor.
S. C. HILLS, 78 Chambers St., N. Y.
----------------------------------------------------------------------
=BEST=

DAMPER REGULATORS

AND WEIGHTED GAUGE COCKS.

MURRILL & KEIZER, 44 HOLLIDAY ST., BALTIMORE.
----------------------------------------------------------------------

=CAVEATS, COPYRIGHTS, TRADE MARKS, ETC.=

Messrs. Munn & Co., in connection with the publication of the
SCIENTIFIC AMERICAN, continue to examine Improvements, and to act as
Solicitors of Patents for Inventors.

In this line of business they have had OVER THIRTY YEARS' EXPERIENCE,
and now have _unequaled facilities_ for the preparation of Patent
Drawings, Specifications, and the Prosecution of Applications for
Patents in the United States, Canada, and Foreign Countries. Messrs.
Munn & Co. also attend to the preparation of Caveats, Trade Mark
Regulations, Copyrights for Books, Labels, Reissues, Assignments, and
Reports on Infringements of Patents. All business intrusted to them
is done with special care and promptness, on very moderate terms.

We send free of charge, on application, a pamphlet containing further
information about Patents and how to procure them; directions
concerning Trade Marks, Copyrights, Designs, Patents, Appeals,
Reissues, Infringements, Assignments, Rejected Cases, Hints on the
Sale of Patents, etc.

=_Foreign Patents._=--We also send, _free of charge_, a Synopsis of
Foreign Patent Laws, showing the cost and method of securing patents
in all the principal countries of the world. American inventors
should bear in mind that, as a general rule, any invention that is
valuable to the patentee in this country is worth equally as much in
England and some other foreign countries. Five patents--embracing
Canadian, English, German, French, and Belgian--will secure to an
inventor the exclusive monopoly to his discovery among about ONE
HUNDRED AND FIFTY MILLIONS of the most intelligent people in the
world. The facilities of business and steam communication are such
that patents can be obtained abroad by our citizens almost as easily
as at home. The expense to apply for an English patent is $75;
German, $100; French, $100; Belgian, $100; Canadian, $50.

=_Copies of Patents._=--Persons desiring any patent issued from
1836 to November 26, 1867, can be supplied with official copies at
reasonable cost, the price depending upon the extent of drawings and
length of specifications.

Any patent issued since November 27, 1867, at which time the Patent
Office commenced printing the drawings and specifications, may be had
by remitting to this office $1.

A copy of the claims of any patent issued since 1836 will be
furnished for $1.

When ordering copies, please to remit for the same as above, and
state name of patentee, title of invention, and date of patent.

A pamphlet, containing full directions for obtaining United States
patents sent free. A handsomely bound Reference Book, gilt edges,
contains 140 pages and many engravings and tables important to every
patentee and mechanic, and is a useful hand book of reference for
everybody. Price 25 cents, mailed free.

Address
=MUNN & CO.=,
Publishers SCIENTIFIC AMERICAN,
37 Park Row, N. Y.

_BRANCH OFFICE--Corner of F and 7th Streets, Washington, D. C._
----------------------------------------------------------------------
The "Scientific American" is printed with CHAS. ENEU JOHNSON & CO.'S
INK. Tenth and Lombard Sts., Philadelphia, and 59 Gold St., New York.

* * * * *

TRANSCRIBER'S NOTES

Obvious punctuation errors have been corrected.

Spelling inconsistencies have been retained.

On page 83, the clause "It has an independent extinguisher for the smaller wick tube" had "ndependent" in the original.

On page 91, the ad reading "The Turbine Wheel made by Risdon & Co., Mt. Holly, N. J., gave the best results at Centennial tests." had "tets" in the original.

On page 92, the patent named "Gas, scintillator for lighting" was numbered "204,28" in the original. The final "5" has been added because sorting the list reveals that the patent numbers form a consecutive series from 204,122 to 204,413, with the only one missing being 204,285.

On page 92, the patent named "Shoetip" was guessed at; the "t" is unclear in the original.

On page 94, the phrase "Alcohol Oxidized in the System." had no terminating punctuation in the original.

On page 94, the illustration containing the words "Diamonds and Carbor", the "Carbor" may be an abbreviation for "Carborundum"; the image is unclear in the original.

On page 94, in the advertisement for "WATSONS [sic] NON [sic] CHANGEABLE GAP LATHE", the abbreviation "MANR." had the "R" as a superscript in the original.