Just published, price 1s., free by Post 1s. 4d.,
The WAXED-PAPER PHOTOGRAPHIC PROCESS of GUSTAVE LE GRAY'S NEW EDITION. Translated from the French.
Sole Agents in the United Kingdom for VOIGHTLANDER & SON'S celebrated Lenses for Portraits and Views.
General Depôt for Turner's, Whatman's, Canson Frères', La Croix, and other Talbotype Papers.
Pure Photographic Chemicals.
Instructions and Specimens in every Branch of the Art.
GEORGE KNIGHT & SONS., Foster Lane, London.
PHOTOGRAPHY.—XYLO-IODIDE OF SILVER, prepared solely by R. W. THOMAS, has now obtained an European fame; it supersedes the use of all other preparations of Collodion. Witness the subjoined Testimonial.
"122. Regent Street
"Dear Sir,—In answer to your inquiry of this morning, I have no hesitation in saying that your preparation of Collodion is incomparably better and more sensitive than all the advertised Collodio-Iodides, which, for my professional purposes, are quite useless when compared to yours.
"I remain, dear Sir,
"Yours faithfully,
"N. Henneman.
Aug. 30. 1852.
to Mr. R.W. Thomas."