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