™, 
310 ESSAYS ann OBSERVATIONS 
REGu ws of antimony diffolved in aquare- 
gia, will be precipitated by plain water, by 
a folution of falt-petre, by fpirit of ‘nitre, 
and, by the alcaline liquors, fixt and vola- 
tile. 
VI. THE matters precipitated from the 
fame folution, by different precipitants, dif- 
fer from one another in feveral remarkable 
qualities. 
WHEN either a muria of fea-falt, a foluti- 
on of falt ammoniac,’ or fpirit of fea-falt (for 
thefe three have nearly the fame effects) is 
put into a folution of filver ; it becomes milky, 
and, as it were, cruddled, and, at length, 
a white powder fubfides to the bottom : this 
powder being wafhed with warm water and 
dried, is foft and impalpable ; its weight ex- 
ceeds that of the filver diffolved, by more 
than on fixth part. This powder comes 
much fooner to fufion than filver, but does 
not recover the appearance or properties of 
that metal; for it looks like a piece of yel- 
lowith glafs, femi-opaque and brittle, yet 
bending or yielding a little, whence it gets 
the name of /una cornea, or horny filver; and 
it is with great difficulty that itcan be reduced 
to true malleable and dudtile filver. 
WHEN 
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