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Agfa Color Plates ammonia Ammonium bromide artificial light blue Borax bound in red BROMOIL brown tones carbon carrier ccm 16 oz cent solution chloride clean clear glass color processes condenser conjugate copy-board copying cover glass daylight Dissolve distance Distilled water dye toning E. J. Wall easel edges enlarging exposed exposure feet from light filter Finlay Color focal length focusing formula g 1 oz g 16 gr give ground glass Hydroquinone hypo illumination immersed inches intensified lamps lantern plate lantern slides lens mask Mercury-Vapor lamp method methyl violet Metol mordanting bath necessary NEWBURY STREET BOSTON obtained original ounces Oxalic acid panchromatic paper PHOTOGRAPHIC pictorial pins position Potassium bichromate Potassium bromide Potassium ferricyanide prefer printing frame red cloth reducer reflector rinsed scale screen sepia sheet Sodium sulphite dry stock solution strip sulphocyanide surface tissue transmitted light transparency Uranium nitrate usually varnish warm black wash Water 1000 ccm worker