The Evolution of Photography / With a Chronological Record of Discoveries, Inventions, Etc., Contributions to Photographic Literature, and Personal Reminescences Extending over Forty Years

by active 1854-1890 John Werge

— Leon Lambert’s carbon printing process patented.

1875. Demonstrations in carbon printing by L. Lambert given in London and elsewhere.

— Eder and Toth intensified collodion negatives and toned lantern slides with chloride of platinum.

1876. “Practical Treatise on Enamelling and Retouching,” by P. Piquepé, Piper and Carter, London.

1877. Ferrous oxalate developer published June 29th.

— Wratten precipitated the gelatine emulsion with alcohol, and so avoided the necessity of dialysing.

1878. Improvement in platinotype patented by W. Willis, junior, July.

— Abney’s “Treatise on Photography” published.

— Abney’s “Emulsion Process” published.

1879. J. Werge’s non-actinic developing tray introduced at the South London Photographic Society.