upon oxygenized and hyperoxygenized muriatic Add , &c. i 
of gas, together with a smell of hyperoxygenized muriatic acid. 
Such a smell is doubtless owing to the great quantity of oxy- 
gen contained in the acid ; it being more than is necessary to 
combine with the quantity of hydrogen contained in the alkali, 
and therefore some of the acid is disengaged, without decom- 
position. All the attempts I have made to ascertain the propor- 
tions of its principles, have been fruitless. The formation and 
existence of this salt, as I before said, are very strong proofs 
oi what I have advanced respecting the state in which hyper- 
oxygenized muriates at first exist ; and very fully prove the dif- 
ferent degree of affinity exercised by each acid toward the basis. 
ytb Species. Hyperoxygenized Muriate of Magnesia. 
Its chemical and physical properties are nearly the same with. 
those of the 5th species, only that, in addition to the other 
bases, lime and ammonia cause a precipitate in this salt 
Its proportions are, 
Hyperoxygenized muriatic acid 
Magnesia - 
Water - 
ho 
25,7 
HS 
100,0. 
Sib Species. Hyperoxygenized Muriate of Alumina. 
I put some alumina, precipitated from muriate of alumina, and 
well washed, but still moist, into a Woulfe's apparatus, disposed 
as for the other earths, and sent a current of oxygenized muriatic 
acid gas through the liquor. The alumina shortly disappeared ; 
and, upon pouring sulphuric acid into the liquor, a strong smell 
of hyperoxygenized muriatic acid was perceivable. When I at- 
tempted to obtain the salt pure, by phosphate of silver, in the 
f 
