The grammar of photo-engraving : containing instruction in drawing, chemistry and optics, as applied to photo-engraving, and a practical treatise on the art of half-tone, zinc etching, swelled gelatine, lithotype and chalk plate engraving, as practiced in the United States (1895)
Farquhar, H. D. (Harry D.), Eder, Josef Maria, 1855-1944 · London : Dawbard & Ward · leaf 120
115 THE GRAMMAR OF PHOTO-ENGRAVING. wash well under the tap and place face up on the casting stone. Place two of the casting irons on top of it parallel with each other and about one inch from the image as shown in Fig. 49. Put some clean water in a bowl. What are known as "milk pans " are the… … Fig. 49 of salt ; when dissolved, add the plaster-of-paris by sifting through a flour sieve. Immediately mix with the hands squeezing out the lumps, and work into a homogeneous mass which should be about the consistency of cream. The mixing of the plaster should be carried on as rapidly as possible…
Photoengraving
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Geistliche Herzens-Einbildungen inn zweihundert und fünfzig biblischen Figur-Sprüchen angedeutet : allen andächtige[n] Herze[n], u. der Tugent-Liebenden Jugent, zu einer Gottseligen Belustigung, auch denen Einfältigen, zu einer anmuthigen Vorstellung, unschweren Ergreiffung, und nuzlichen Fassung, auss allen canonischen Büchern der H. Schrifft ... (1688)](https://img.insideoutlibrary.com/img/200/ia-geistlicheherzen00matt-190-718.webp)
