Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 117
A and B. FORHULA FOR BLACK PRINTS Negatives. White lines on blue ground; prepare the paper with Ammonio-Citrato of iron 40 grains, Water 1 ounce. After printing wash in water. Positives. Black lines on white ground; prepare the paperwith: Iron perchloride 616 grain.s, Oxalic Acid 308 grains, Water…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
