upon oxygenized and hyperoxygenized muriatic Acid , &c. 15^ 
throughout by that name.* This chemist, one of the founders of 
the methodical Nomenclature, is too well acquainted with its 
principles, to apply the term hyperoxygenized muriate to any 
thing but a combination of hyperoxygenized muriatic acid. It 
is evident, therefore, that he considers the portion of oxygen, 
which, in equal quantities of corrosive sublimate and calomel, 
is greater in the former, to be combined with the acid, and not 
with the oxide of mercury. As soon as I have stated some 
experiments that prove Mr. Fourcroy’s opinion to be errone- 
ous, and endeavoured to establish the analysis of corrosive 
sublimate and of calomel, I shall take notice of a salt hitherto 
unknown, which really is hyperoxygenized muriate of mercury. 
I took a portion of corrosive sublimate, and precipitated by 
potash. The liquor was filtered ; and, upon being tried, nothing 
but muriate of potash was found. No reagent could discover 
the smallest trace of hyperoxygenized muriatic acid. 
Sulphuric, nitric, phosphoric, and many other acids, poured 
upon corrosive sublimate, did not disengage either muriatic, or 
hyperoxygenized muriatic acid. Nitrate of silver, poured into 
a solution of corrosive sublimate, gave an abundant white 
precipitate. 
From these experiments it is evident, that muriatic acid, not 
hyperoxygenized muriatic acid, is combined with the oxide of 
mercury in corrosive sublimate. 
To determine the proportions of this salt, I took one hundred 
parts, and precipitated by nitrate of silver. I then took another 
hundred, and precipitated by potash. The result of these two 
I have said Before, that this acid was talked of by many chemists, as if the existence 
of it had really been proved. 
