Important: Safety Warning
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
Black Flux
Cream of tartar, 2 melting in hot tea or coffee; and to form pencils for writing on asses' skin, or paper parts; nitre, 1 part; powder, mix, and defla- , or paper parts; nitre, 1 part; powder, mix, and defiaprepared by rubbing burnt hartshorn into it. grate by small quantities at a time, in a red The last may be employed as an anatomical hot crucible. This is merely carbonate of injection, by adding (after removing it from potash, mixed with charcoal in a finely-diviremoving it from potash, mixed with charcoal in a finely-divithe fire), 1 part quicksilver (warm). Liquid ded state. It is used for smelting metallic at 172°; solid at 140° Fahr. 3457. Wood's Patent Fusible Metal melts between 150° and 160° Fahr. It con- . It consists of 3 parts cadmium, 4 tin, 8 lead, and 15 bismuth. It has a brilliant metallic lustre, metallic lustre, and does not tarnish readily. ores, and exercises a reducing action, as well as promoting the fusion. (See No. 11.) No. 11.) 3462. White, or Cornish Refining Flux. Cream of tartar and nitre, equal parts ; deflagrate as last.