Practical Photo-micrography: by the Latest Methods

achromatic acid actinic albumen paper alkaline ammonia angle angular aperture apochromatic apparatus arrangement bath bromide paper bull's bull's-eye camera centre chapter chloride Citric acid Cloth bound color contact printing correct dark slide daylight density developer diameters diatoms difficulties disc emulsion enlargement exposure eye-piece ferrotype ferrous oxalate ferrous sulphate fixed focal length focus focusing gelatine bromide grains ground glass high lights hydroquinone hypo illumination immersion inches lantern slides lens lenses Library Edition low power magnification matter minutes negative non-actinic numerical aperture object Ocular-Projection oil lamp operations ordinary orthochromatic ounce Paper covers photo-micrography photographic platinotype practice Processes of Pure produced projection oculars Pure Photography pyro rack radiant rays recommend SCOVILL & ADAMS sensitive plate solution stained substage condenser suitable surface tone transferotype usually violet W. K. Burton washed wet collodion wet collodion process writer Zeiss