MANUFACTURERS OF
- IMPROVED GELATINE FOR EMULSION.
- IMPROVED GELATINE FOR COLLOTYPE.
Special Gelatines for all Photographic purposes.
THE INDISPENSABLE HANDBOOK
TO
The Optical Lantern:
A COMPLETE CYCLOPÆDIA ON THE SUBJECT OF
OPTICAL LANTERNS, SLIDES, AND ACCESSORY APPARATUS.
Compiled by
WALTER D. WELFORD.