Salt Ammoniac • t 1 z 
Liquor defcended one Inch and three Lines* 
Vitriol made it defcend not quite an Inch, 
and Sea-Salt but two Lines. 
Monfieur Homberg orders a Pound of 
Salt Ammoniac and a Pound of corrofive 
Sublimate to be feparately reduced to Pow¬ 
der ; then, after mixing them well together, 
he directs them to be put into a Glafs Bottle, 
and a Pint and a half of difdlled Vinegar 
to be poured thereon. This done, and the 
Compofition being fhaken together brifkly, 
it will become fo cold, that a Man can but 
ill endure the VefTel in his Hands even in 
the Summer-time. He fays, that once, as he 
was making this Experiment, the Mixture 
happened to freeze ; and Monfieur Geqffroy 
tells us the like Accident befel him once, 
on difiolving a large Quantity of Salt Ammo~ 
niac in Water, fome Drops on the Outfide 
of the Glafs freezing: the wet Straw where¬ 
on it flood, was likewife faflened thereto 
by Ice. But though he try’d many times he 
could never produce Ice again. 
It is not my Purpofe to enumerate the 
feveral Ufes of this Salt ; I fhall therefore 
conclude with obferving, that it is extreme¬ 
ly pungent, converts Aqua Forth into an 
Aqua Regia, caufes Tin to adhere to Iron, 
and difiolved in common Water, is, I am 
informed, a Secret for the taking away of 
Warts. 
V CL.. II, 
r 
CHAP, 
