Photo-engraving, Photo-etching and Photo-lithography in Line and Half-tone / Also Collotype and Heliotype

by W. T. Wilkinson

(MOSSTYPE.)

PHOTO-ENGRAVING,

PHOTO-ETCHING,

AND

IN LINE AND HALF-TONE;

ALSO,

BY

OF LONDON.

REVISED AND ENLARGED BY

EDITOR OF “THE PHILADELPHIA PHOTOGRAPHER,” AUTHOR OF “WILSON’S PHOTOGRAPHICS,” “WILSON’S QUARTER CENTURY IN PHOTOGRAPHY,” “PHOTOGRAPHIC MOSAICS,” ETC.