Chapter XIX: Part 1: Introduction and the Principles of Geometry. Part 2. Land

Surveying; comprising General Observations--The Chain--Offsets
Surveying by the Chain only--Surveying Hilly Ground--To
Survey an Estate or Parish by the Chain only--Surveying
with the Theodolite--Mining and Town Surveying--Railroad
Surveying--Mapping--Division and Laying out of Land--Observations
on Enclosures--Plane Trigonometry. Part 3. Levelling--Simple
and Compound Levelling--The Level Book--Parliamentary Plan
and Section--Levelling with a Theodolite--Gradients--Wooden
Curves--To Lay out a Railway Curve--Setting out Widths. Part
4. Calculating Quantities generally for Estimates--Cuttings
and Embankments--Tunnels--Brickwork--Ironwork--Timber
Measuring. Part 5. Description and Use of Instruments in
Surveying and Plotting--The Improved Dumpy Level--Troughton’s
Level--The Prismatic Compass--Proportional Compass--Box
Sextant--Vernier--Pantagraph--Merrett’s Improved
Quadrant--Improved Computation Scale--The Diagonal
Scale--Straight Edge and Sector. Part 6. Logarithms of
Numbers--Logarithmic Sines and Co-Sines, Tangents and
Co-Tangents--Natural Sines and Co-Sines--Tables for Earthwork,
for Setting out Curves, and for various Calculations, etc., etc.,
etc.

* * * * *

_Saws: the History, Development, Action, Classification, and Comparison of Saws of all kinds._ By ROBERT GRIMSHAW. With 220 _illustrations_, 4to cloth, 12_s._ 6_d._

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_A Guide for the Electric Testing of Telegraph Cables._ By Capt. V. HOSKIŒR, Royal Danish Engineers. With _illustrations_. Second edition, crown 8vo, cloth, 4_s._ 6_d._

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_Laying and Repairing Electric Telegraph Cables._ By Capt. V. HOSKIŒR, Royal Danish Engineers. Crown 8vo, cloth, 3_s._ 6_d._

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_A Pocket-Book of Practical Rules for the Proportions of Modern Engines and Boilers for Land and Marine purposes._ By N. P. BURGH. Seventh edition, royal 32mo, roan, 4_s._ 6_d._

Details of High-Pressure Engine, Beam Engine, Condensing, Marine
Screw Engines, Oscillating Engines, Valves, etc., Land and
Marine Boilers, Proportions of Engines produced by the Rules,
Proportions of Boilers, etc.

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_Table of Logarithms of the Natural Numbers, from_ 1 to 108,000. By CHARLES BABBAGE, Esq., M.A. Stereotyped edition, royal 8vo, cloth, 7_s._ 6_d._

To ensure the correctness of these Tables of Logarithms, they
were compared with Callett’s, Vega’s, Hutton’s, Briggs’,
Gardiner’s, and Taylor’s Tables of Logarithms, and carefully read
by nine different readers; and further, to remove any possibility
of an error remaining, the stereotyped sheets were hung up in the
Hall at Cambridge University, and a reward offered to anyone who
could find an inaccuracy. So correct are these Tables, that since
their first issue in 1827 no error has been discovered.

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_The Steam Engine considered as a Heat Engine_: a Treatise on the Theory of the Steam Engine, illustrated by Diagrams, Tables, and Examples from Practice. By JAS. H. COTTERILL, M.A., Professor of Applied Mechanics in the Royal Naval College, 8vo, cloth, 12_s._ 6_d._

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_The Practice of Hand Turning in Wood, Ivory, Shell, etc._, with Instruction for Turning such Work in Metal as maybe required in the Practice of Turning in Wood, Ivory, etc., also an Appendix on Ornamental Turning. (A book for beginners). By FRANCIS CAMPIN. Second edition, _with wood engravings_, crown 8vo, cloth, 6_s._

CONTENTS:

On Lathes--Turning Tools--Turning Wood--Drilling--Screw
Cutting--Miscellaneous Apparatus and Processes--Turning
Particular Forms--Staining--Polishing--Spinning
Metals--Materials--Ornamental Turning, etc.

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_Health and Comfort in House Building, or Ventilation with Warm Air by Self-Acting Suction Power_, with Review of the mode of Calculating the Draught in Hot-Air Flues, and with some actual Experiments. By J. DRYSDALE, M.D., and J. W. HAYWARD, M.D. Second edition, with Supplement, demy 8vo, _with plates,_ cloth, 7_s._ 6_d._

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_Treatise on Watchwork, Past and Present._ By the Rev. H. L. NELTHROPP, M.A., F.S.A. _Numerous illustrations_, crown 8vo, cloth, 6_s._ 6_d._

CONTENTS:

Definitions of Words and Terms used in
Watchwork--Tools--Time--Historical Summary--On Calculations of
the Numbers for Wheels and Pinions; their Proportional Sizes,
Trains, etc.--Of Dial Wheels, or Motion Work--Length of Time
of Going without Winding up--The Verge--The Horizontal--The
Duplex--The Lever--The Chronometer--Repeating Watches--Keyless
Watches--The Pendulum, or Spiral Spring--Compensation--Jewelling
of Pivot Holes--Clerkenwell--Fallacies of the Trade--Incapacity
of Workmen--How to Choose and Use a Watch, etc.

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_Now in Course of Publication._

To be completed in about 30 Monthly Parts, each Part containing 64 pp., with _numerous illustrations_, super-royal 8vo, price 2_s._; or in 5 Divisions, cloth, price 13_s._ 6_d._ each.

DIVISIONS I., II, & III., NOW READY.

SPONS’ ENCYCLOPÆDIA OF THE INDUSTRIAL ARTS, MANUFACTURES, AND COMMERCIAL PRODUCTS.

* * * * *

_Now in Course of Publication._

To be completed in about 18 Monthly Parts, each Part containing 64 pp., with _numerous illustrations_, super-royal 8vo, price 2_s._; or in 3 Divisions, cloth, price 13_s._ 6_d._ each.

DIVISIONS I. AND II. NOW READY.

A SUPPLEMENT TO SPONS’ DICTIONARY OF ENGINEERING,

Civil, Mechanical, Military, and Naval.

EDITED BY ERNEST SPON, MEMB. SOC. ENGINEERS.

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London: E. & F. N. SPON, 16, Charing Cross.
New York: 446, Broome Street.