These works are used at the chief public schools, and by the tutors at the Universities, and are admirably adapted for private and self-instruction.

WHITTAKER & CO., Ave Maria Lane.


COLLODION PORTRAITS AND VIEWS obtained with the greatest ease and certainty by using BLAND & LONG'S preparation of Soluble Cotton: certainty and uniformity of action over a lengthened period, combined with the most faithful rendering of the half-tones, constitute this a most valuable agent in the hands of the photographer. Albumenised paper, for printing from glass or paper negatives, giving a minuteness of detail unattained by any other method, 5s. per Quire.

Waxed and Iodized Papers of tried quality.

Instruction in the Processes.

BLAND & LONG, Opticians and Photographical Instrument Makers, and Operative Chemists, 153. Fleet Street, London.

*** Catalogues sent on application.