? A silvering amalgam.

= amalgam, n. 1. Obsolete.

orig. A soft mass formed by chemical manipulation, esp. a soft or plastic condition of gold, silver, etc. produced by combination with mercury; hence…

(a) a symbolical tree representing the growth of alchemical knowledge or the development of alchemical processes; (b) = tree of Diana n. at tree, n.…

†(a) = tree of Diana n. at tree, n. compounds 3b (obsolete); (b) historical = philosophers' tree n. at philosopher, n. compounds 3.

U.S. Metallurgy. The amalgam of gold and mercury that is formed when gold is extracted with mercury; (also) the mercury itself (cf. quicksilver, n.…

an amalgam of mercury with silver or gold, found crystalline, massive, or semi-fluid in various countries.