Photography with emulsions: a treatise on the theory and practical working of gelatine and collodion emulsion processes (1882)
Abney, William de Wiveleslie, Sir, 1843-1920 · New York, Scovill manufacturing co. · leaf 159
in a very thin layer (say) of about £ of an inch thick. When set, it is scraped off the dish with a piece of glass, and transferred to a jar or bottle in strips. Mr. England first scores it over with the prongs of a silver fork, so breaking it up into fine strips. Cold water is then poured on to… … a common canister a hole is perforated so as just to admit of the insertion of a glass tube a, a ; a piece of india- rubber tubing connects this with the water tap, and covers any small chink between the glass and the lid, as shown. A spout is soldered on to the canister, as shown. A bottle…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-294-120.webp)
