Process: The Photomechanics of Printed Illustration, Volume 12

acid advertisement aluminium ammonia aperture Arthur Cox artist avoirdupois bath bichromate blocks blue Bolt Court bromide c.cs camera carbon cent centimetres Club coating collodion collodion emulsion collotype color competition dark room dots double-tone inks dry plates effect electrotyping emulsion engraving etching exhibition exposure film filter firm fish glue frame gelatine give glass glycerine grain half-tone high-lights illustrated inches interest lamp lens light lines litho lithographic metal method negative nitric acid obtained ordinary original ounce panchromatic paper patent percentage solutions photo-engraving photographic photogravure pictorial picture piece placed portrait position possible post card practical printer printing prize Process Photogram produced readers reproduced Royal Photographic Society screen sensitised sensitive side slide solution square stop suggestion suitable surface three-color tints tone transfer varnish washed workers yellow zinc