PROOFS OP THE PROPERTIES OF PLATINA.

1 S 3

A similiar effect is produced by throwing phosphuret of pla-tina upon nitrate of potash in a state of fusion.

Experiment V.

Platina is soluble in potash in the dry way.

If potash, prepared according to Berthollet's process, be kept infusion for some time in a platina crucible it will be found, thatthis vessel has lost part of its weight, which is dissolved by thepotash. For if we dissolve this alcali in water, and saturatethe solution with muriatic acid, a triple salt will be obtained byevaporation, consisting of platina, muriatic acid, and potash.This fact was first noticed by Mr. Chenevix.*

M4

Philosoph. Trans. May 1802.