TOOL WORKS.

Modern

Engineering Practice

A REFERENCE LIBRARY

ON ELECTRICITY, STEAM, refrigeRATION, GAS ENGINES, MARINE AND LOCO-
MOTIVE WORK, PATTERN MAKING, FOUNDING, MACHINE DESIGN, SHOP
PRACTICE, TOOL MAKING. FORGING, MECHANICAL DRAWING,
HEATING, VENTILATING, PLUMBING, CARPENTRY,
AUTOMOBILES. ETC.

Editor-in-Chief

FRANK W. GUNSAULUS

PRESIDENT ARMOUR INSTITUTE OF TECHNOLOGY

Assisted by a Corps of

DISTINGUISHED ENGINEERS AND TECHNICAL EXPERTS

TWELVE VOLUMES

Six thousand pages, four thousand illustrations, full page plates,
and engravings

CHICAGO

AMERICAN SCHOOL OF CORRESPONDENCE

MCMVI