The Photographic News: A Weekly Record of the Progress of Photography, Volume 21Cassell, Petter and Galpin, 1876 - Photography |
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actinometer albumenized paper alcohol alkaline ammonia apparatus appear applied artist Autotype Company baryta better bichromate blue bromide camera carbolic acid carbon printing carbon process chemical chloride chromotype coating collodion collodion process colour Correspondents cubic centimetres cyanide dark difficulty dissolved dried dry plates employed emulsion Exhibition experiments exposed exposure film filtered gallic acid gelatine give glass plate grains grammes graphers immersed iodide iron lens Lichtdruck light liquid matter medal meeting ment method minutes necessary negative nitrate of silver nitric acid obtained operation ordinary ounce patent Photographic Society picture pigment pinholes platinotype portrait potash potassium practice prepared present produced pyrogallic acid pyroxyline rays readers reticulation salt secured sensitive silver bath silver bromide silver printing soda soluble solution studio sulphate surface taken tint tion tissue tone transparencies varnish violet warm washed