nt:$

By STEPHEN ROPER, Engineer. 12mo., tuck, gilt edges. $2.00

$ROPER.--The Young Engineer's Own Book:$

Containing an Explanation of the Principle and Theories on which
the Steam Engine as a Prime Mover is Based. By STEPHEN ROPER,
Engineer. 160 illustrations, 363 pages. 18mo., tuck $3.00

$ROSE.--Modern Steam-Engines:$

An Elementary Treatise upon the Steam-Engine, written in Plain language;
for Use in the Workshop as well as in the Drawing Office. Giving Full
Explanations of the Construction of Modern Steam-Engines: Including
Diagrams showing their Actual operation. Together with Complete but
Simple Explanations of the operations of Various Kinds of Valves, Valve
Motions, and Link Motions, etc., thereby Enabling the Ordinary Engineer
to Clearly Understand the Principles Involved in their Construction and
Use, and to Plot out their Movements upon the Drawing Board. By JOSHUA
ROSE, M.E., Author of "The Complete Practical Machinist," "The Pattern
Maker's Assistant," "The Slide Valve" and "Mechanical Drawing
Self-Taught." Illustrated by over 400 engravings. In one volume, 4to,
320 pages. $6.00

$A Great Repository of Practical and Scientific Information.$

* * * * *

One of the Fullest, Freshest and Most Valuable Hand-books of the Age.
Indispensable to Every Practical Man.

JUST READY.

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CONTAINING

Several Thousand Receipts, covering the Latest, Most Important and Most
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Edited chiefly from the German of Drs. Winckler, Eisner, Heintze,
Mierzinski, Jacobsen, Koller, and Heinzerling,

WITH ADDITIONS BY
$WILLIAM T. BRANNT,$
Graduate of the Royal Agricultural College of Eldena, Prussia,
AND $WILLIAM H. WAHL, PH. D. (Heid.),$ Secretary of the
Franklin Institute, Philadelphia; author of
"Galvanoplastic Manipulations."

$Illustrated by Seventy-eight Engravings.$

In one volume, xxxii, 495 pages, 12mo., closely printed, containing an
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