of a, 202.

Wheels, construction, to find the curves of, 204.
to draw the arcs for the teeth of, 205.

Whitworth thread, 156.
quick return motion, plotting out, 253-256.

Willis' scale of tooth proportions, 195.
application of, 197.

Wood engraving, drawing for, 268.

Wood, representation of by cross-hatching, 82.
representation of, regular and irregular shade lines in, 90.

Wrought iron, representation of, 277.
representation of by cross-hatching, 82.

CATALOGUE

OF

Practical and Scientific Books

PUBLISHED BY

HENRY CAREY BAIRD & CO.

INDUSTRIAL PUBLISHERS, BOOKSELLERS AND IMPORTERS,

810 Walnut Street, Philadelphia.

[Illustration: Pointing Finger] Any of the Books comprised in this
Catalogue will be sent by mail, free of postage, to any address in the
world, at the publication prices.

[Illustration: Pointing Finger] A Descriptive Catalogue, 96 pages, 8vo.,
will be sent free and free of postage, to any one in any part of the
world, who will furnish his address.

[Illustration: Pointing Finger] Where not otherwise stated, all of the
Books in this Catalogue are bound in muslin.

$AMATEUR MECHANICS' WORKSHOP:$

A treatise containing plain and concise directions for the manipulation
of Wood and Metals, including Casting, Forging, Brazing, Soldering and
Carpentry. By the author of the "Lathe and Its Uses." Third edition.
Illustrated. 8vo. $3.00

$ANDRES.--A Practical Treatise on the Fabrication of Volatile and Fat
Varnishes, Lacquers, Siccatives and Sealing Waxes.$

From the German of ERWIN ANDRES, Manufacturer of Varnishes and Lacquers.
With additions on the Manufacture and Application of Varnishes, Stains
for Wood, Horn, Ivory, Bone and Leather. From the German of DR. EMIL
WINCKLER and LOUIS E. ANDES. The whole translated and edited by WILLIAM
T. BRANNT. With 11 illustrations. 12mo. $2.50

$ARLOT.--A Complete Guide for Coach Painters:$

Translated from the French of M. ARLOT, Coach Painter; for eleven years
Foreman of Painting to M. Eherler, Coach Maker, Paris. By A.A. FESQUET,
Chemist and Engineer. To which is added an Appendix, containing
Information respecting the Materials and the Practice of Coach and Car
Painting and Varnishing in the United States and Great Britain. 12mo.
$1.25

$ARMENGAUD, AMOROUX, AND JOHNSON.--The Practical Draughtsman's Book of
Industrial Design, and Machinist's and Engineer's Drawing Companion$:

Forming a Complete Course of Mechanical