TECHNICAL BOOKS ON 
ARTIFICIAL SILK 
THE MANUFACTURE OF ARTIFICIAL 
SILK, by WueeLER. (Chapman and 
Hall). 18s. post free. 
ARTIFICIAL SILK, by Dr. Franz REIN- 
THALER, translated by Proressor F. M. 
Rowe. (Chapman and Hall). 15s. 6d. 
post free. 
ARTIFICIAL SILK—ITS MANUFACTURE 
AND USES, by TroMAs WOODHOUSE. 
(Pitman). 5s. 8d. post free. 
ARTIFICIAL SILK AND ITS MANUFAC- 
TURE, by J. FovLtzeEr, translated by 
TaoMAS WoOoDHOUSE. (Pitman). 21s. 6d. 
post free. 
THE ARTIFICIAL SILK HANDBOOK, 
Compiled by the Silk Journal. (John 
Heywood. Ltd.). 38s. 9d. post free. 
These books may be obtained from 
The Efficiency Magazine, 
KENT HOUSE, 
87. REGENT STREET, LONDON W.L