A SYSTEM OF 
i66 
9. It is diffolved, in forma ficca^ by the liver 
of fulphur, and alio fomewhat by the glafs 
of bifmuth. 
10. It is not carried away by the antimony 
during the volatilifation of that femi-metal, 
^nd is therefore conveniently ieparated 
from other metals by the help of crude 
antimony, in which procefs the other me- 
tals are partly made volatile, and fly off 
with the antimony, and partly unite with 
the fulphur, to which the gold has no at- 
trafbon, unkfs by means of fome uniting 
body, or by a long digeftion. 
11. The phofphorus is faid ,to have ingrefs 
into gold. 
12. If mixed with a lefs portion of filver, 
platina, copper, iron, and zinc, it preferves 
tolerably well its du6lility ; but, 
13. When mixed with tin it becomes very 
brittle j and it attravfls likewife the fmoke 
of that metal, fo as to be fpoiled, if melted 
in an hearth where tin has been lately 
melted: And this is perhaps the reafon 
why gold becomes brittle, and of a paler 
colour, when melted in a new black lead 
crucible (Sedl. cliv.) 
14. It requires a ilrong Heat before it melts, 
nearly as much, or a little more thar^ 
copper. ■ 
15. It mixes or amalgamates readily with 
quick filver. 
1 6. It is not diffolved by the glafs of lead, 
and therefore remains on the cuppel. 
In confequence of thefe its principal 
qualities, it feems as if it could never be 
|ound in the e^rth but in a native or pure 
ft ate; 
