OF THE TERMS, PROCESSES, FORMULE AND APPLIANCES
AVAILABLE IN PHOTOGRAPHY,

ARRANGED IN CYCLOPÆDIC FORM

FOR READY REFERENCE.

BY

EDWARD L. WILSON, PH.D.,

EDITOR OF "WILSON'S PHOTOGRAPHIC MAGAZINE," AUTHOR OF "WILSON'S PHOTOGRAPHICS,' "WILSON'S
QUARTER CENTURY IN PHOTOGRAPHY," "PHOTOGRAPHIC MOSAICS," ETC.

The camera is mightier than the pen or the pencil.

NEW YORK:

PUBLISHED BY EDWARD L. WILSON,

No. 853 BROADWAY.

1894.

This Work

IS DEDICATED WITH ALL KINDLY FEELINGS

TO THE PHOTOGRAPHERS IN MY OWN COUNTRY AND ABROAD,

WHO, FOR OVER THIRTY YEARS,

HAVE UPHELD ME IN MY EFFORTS TO HONOR OUR ART;

NOT FORGETTING

ALL THOSE WHO HAVE FALLEN INTO THE RANKS MEANWHILE, AND WHOSE COOPERATION IS ALWAYS SO

GRATEFULLY WELCOMED BY

Edward L. Wilson.