MACHINERY'S ENCYCLOPEDIA

VOLUME VII

INDEX AND GUIDE TO SYSTEMATIC READING

MACHINERY'S

ENCYCLOPEDIA

WITH 1925 SUPPLEMENT

A WORK OF REFERENCE COVERING PRACTICAL MATHE-
MATICS AND MECHANICS, MACHINE DESIGN, MACHINE
CONSTRUCTION AND OPERATION, ELECTRICAL, GAS, HY-
DRAULIC, AND STEAM POWER MACHINERY, METALLURGY,
AND KINDRED SUBJECTS IN THE ENGINEERING FIELD

COMPILED AND EDITED BY

ERIK OBERG AND FRANKLIN D. JONES, EDITORS OF MACHINERY

IN COLLABORATION WITH MANY PROMINENT MECHANICAL
AND ELECTRICAL ENGINEERS

VOLUME VII

STEAM ENGINES ZISIUM

NEW YORK

THE INDUSTRIAL PRESS

LONDON: THE MACHINERY PUBLISHING COMPANY, LTD.