...shops. It would appear that the affinity of silver for sulphur is very powerful. 50. Goto. Au = 199-2. This metal is found native, either pure, or alloyed...malleable of all metals ; and it melts in a strong red or white heat. From its feeble affinities, gold does not readily tarnish, and may be heated for...

...native, either pure or alloyed with silver and tellurium. When combined with silver, it is purified bv quartation ; that is, by fusing it with so much silver,...powder, which, when fused, assumes the peculiar yellow color of gold. Gold is distinguished by its pure yellow color, high metallic lustre and great density....

...operation of parting, which consists in boiling the alloy (after rolling it into a thin plate) in strong nitric acid, which dissolves the silver and leaves the gold as a coherent sponge."* As the accuracy of the result of an assay is liable to be influenced, either by...

...times its weight of pure silver, and then treated in a porcelain dish or capsule with a little warm nitric acid, which dissolves the silver and leaves the gold as a brownish-black powder or dark coherent mass. This process of separating gold from silver is called...

...times its weight of pure silver, and then treated in a porcelain dish or capsule with a little warm nitric acid, which dissolves the silver and leaves the gold as a brownish-black powder or dark coherent mass. This process of separating gold from silver is called...