the Attractive Powers of Mineral Acids. 
3 1 
common dilute fate, that is, whole ipecifc gravity is under 
1,17, does not at all affedt it. 
1 he calces of arlemc are Ids loluble in this acid than in the 
vitriolic or nitrous. 
We have now gone through mod of the bales to which acids 
are capable of uniting (manganefe and platina I have purpofely 
omitted, as I was not pofleffed of a fufficient quantity of either 
in that degree of purity requifite for exadf experiments). We 
have alfo feen the quantity of the mineral acids requifite to 
laturate each bafis, except the metallic bales, all of which 
require an excefs of acid, not only to diffolve them, as in molt 
cafes much of it flies off with the phlogifton in an aerial form, 
but alfo to keep them in folution. The quantity of any balls, 
taken up by a given quantity of any of thefe acids, is ealily 
found ; for if 100 grs. of any balls take up, at the point o-f 
figuration, or require for their folution, the quantity a of anv 
acid, the quantity taken up or diffolved by 100 grs. of that 
acid will be — . 
a 
The proportion of ingredients which I have afligned to dif- 
ferent neutral lalts appears, at lirfh light, very different from 
that which Mr. bergman has aferibed to them. This for 
fome time made me very uneafy, as 1 have the higheft confi- 
dence in the Ikill and judgement of that excellent chymiff ; but 
on a ftridt examination I have found, that the difference is more 
apparent than real. Mr. bergman has never attempted m 
afcertain the quantity of real acid in any fubffance; but has, 
according to the cuflom of all preceding writers, beffowed the 
title of acid on thole liquids which contain it in the moll con- 
centrated, or at leaf; in a very concentrated ffate, but which 
fill 
