A History and Handbook of Photography

acid action of light albumen alcohol apparatus appear applied artist bichromate of potash bitumen bromide Calotype camera camera obscura Carbon Printing chemical chloride coating collodion colour Daguerre Daguerre's Daguerreotype dark room dark slide despatches discovery dissolved employed engraving enlarged etching experiments exposed exposure film focus focussing formed gelatine give glass plate grains ground glass gun-cotton heliographic hyposulphite of soda impressions instrument invention inventor iodide of silver John Herschel Lantern lens lenses liquid means mercury Messrs metal method microscope minute necessary negative Nicéphore Niepce Niepce de Saint-Victor nitrate of silver object obtained operator ordinary ounce paper Paris photographic photographic paper picture placed Poitevin portraits positive potash potassium prepared produced proof Pyrogallic Acid rays rendered reproduced Saint-Victor sensitised sensitive shadows sheet silver bath solar solution STEREOSCOPE substance surface taken Talbot tion tube varnish washed wet collodion process