1854. E. R., of Tavistock, published directions for the use of isinglass as a substitute for collodion.
— First series of photographic views of Kenilworth Castle, &c., from collodion negatives, published by Frederick Scott Archer.
— Liverpool Photographic Journal, first published by Henry Greenwood, bi-monthly.
— First roller-slide patented by Messrs. Spencer and Melhuish, May 22nd.
— Fox Talbot first applied albumen to paper to obtain a finer surface for photographic printing.
— Photo-Enamel process; first patent December 13th.
— Dry collodion plates first introduced.
1855. M. Poitevin’s helioplastic process patented February 20th.
— Dr. J. M. Taupenot’s dry plate process introduced.
— Photo-galvanic process patented June 5th.