On the Production of Photographs in Pigments: Containing Historical Notes on Carbon Printing and Practical Details of Swan's Patent Carbon Process |
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actinometer action of light adhere albumen alum applied bichromate of ammonia bichromate of potash bichromated gelatine carbon printing carbon process cement chloride chrome alum chromic acid chromic salt chromium collodion colouring matter compound degree depth described dissolved effected employed exposed to light exposure film Garnier and Salmon glass glycerine gradation gum arabic half-tone hydrochloric acid hygroscopic immersion India-rubber solution Indian ink lamp-black layer linseed oil manner material Mawson means method mixture mode mounting necessary negative obtained operation organic matter patented penetrated permanent photographic printing photographically impressed picture pigment plate Poitevin portions Pouncy pressure produced proportion of colour removed rendered insoluble saturated solution secured sensitive paper sensitive tissue shade sheet silver printing soluble solution of bichromate solvent spontaneous insolubility subsequent substance surface Swan Swan's tartaric acid temperature thickness thin tint tissue is prepared tissue-compound transfer unaltered uneven warm water washing whilst