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The photographic negative : written as a practical guide to the preparation of sensitive surfaces by the calotype, albumen, collodion, and gelatine processes, on glass and paper, with supplementary chapters on development, etc., etc. (1888)

Burbank, W. H. (William Henry), 1853- · New York : Scovill Manufacturing Co. · leaf 184

An illustration from The photographic negative : written as a practical guide to the preparation of sensitive surfaces by the calotype, albumen, collodion, and gelatine processes, on glass and paper, with supplementary chapters on development, etc., etc., 1888, leaf 184
te 1 ounce (437 grains) Sodium carbonate (chem. pure, dry^ 1 ounce (437 grains) Ammonium bromide 20 grains On the other hand, if the image shows undesirable contrast and backwardness in the details, the developer should be fur- ther diluted with an ounce of water, and ten, or even twenty, drops of…

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