Important: Safety Warning
This page contains a formula or preparation using substances now known to be dangerously toxic, such as arsenic, mercury, lead, or cyanide compounds. Exposure to these substances can cause severe poisoning, permanent injury, or death.
In addition, 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.
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Evans' Tooth Amalgam
Take them, and fasten them firmly together with of pure grain tin, 2 parts; cadmium and steel wire. Place the whole, as soon as the bees' wax, of each 1 part; melt them together luting is dry, into a blast furnace, and in a porcelain crucible at a heat not exceed- short time the mercury will all have passed ing 6000 Fahr., and cast the alloy so as to off in vapor, when the crucible may be set form a small ingot, which , when cold, must aside to cool, and the alloy will be found in a be reduced to filings. For use, a small button at the bottom. As some portion of quantity of these filings is formed into an the tin in the alloy has been lost in the operaamalgam with quicksilver, the excess of the tion, the button should be remelted in a clean open crucible, with the addition of a little pure tin. This will now be ready to make again into amalgam as occasion requires. 3555. Ruhmkorf's Amalgamating Fluid. Dissolve by heat 2 parts by weight of mercury in 1 part aqua regia; when dissolved, add 10 parts hydrochloric acid. A worn-out zinc will be amalgamated in a few seconds by immersion in this fluid.