PHILOSOPHICAL TRANSACTIONS 
OF THE 
ROYAL SOCIETY OF LONDON. 
Series A, Vol. 221. Pp. 117-138. 
r 
&tAL Hl3^5 
) 
RESEARCHES ON THE ELASTIC PROPERTIES AND THE 
PLASTIC EXTENSION OF METALS. 
BY 
W. E. DALBY, F.R.S., 
PROFESSOR OF ENGINEERING AT THE CITY AND GUILDS (ENGINEERING) COLLEGE OF THE 
IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY. 
Printed and Published for the ROYAL SOCIETY by 
HARRISON AND SONS, Ltd., 44-47, ST. MARTIN’S LANE, LONDON, W.C. 2. 
Printers tn «9riluiarw ta $?tsf fHajejitn. 
1920. 
Price Three Shillings and Sixpence, 
A 585. 
29.9.20 
