3 * 
Mr. kiewan’s Experiments mdObfervatlons on 
infolubl ^ 'If Vitr! ° HC ^ t! ‘ e tW ° firft 
infallible in the marine, and all three difficultly foluble in the 
w« <1. fin,, th „ M , W ,J" ” 
eve, made the propoled experiments, atleaft he makes no men- 
tion of their refult. 
1 he d.fcovery of the quantity of real acid in each of the 
mineral acd hquors, and the proportion of real acid, taken up 
7 . given quantity of each baf.s at the point of faturation, led 
^ unexpectedly to what feems to me the true method of in- 
eft, gat, ng the quantity of attraffion which each acid bears to 
^ baf£S t0 whlch !t is «pable of uniting; for it was 
impoffible not to perceive, 
Firft, That the quantity of real add, necefary to faturate a 
% Jr” ** * imfd > - * *>•> 
Secondly, That the quantity of each bafis, requifte to faturate 
:r: e zz: f acid ’ u My - the ++** 
. Thus 100 S rs - of each of the acids require for their fatun 
t,0n a er ^ed alkali than of calcareous e rth 
more of this earth than of volatile alkali, more of tl, s a H 
than of magnefia and more of magnelia than of earth of 
aLum, as may be feen in the following table. 
Quantity of bafis taken up by 100 grs. of each of th 
he mineral acids . 
Vitriolic acid 
Nitrous acid 
Marine acid 
Veg. fixed 
alkali. 
Grs. 
2 1 5 
21 5 
21 5 
Min. 
alkali. 
Grs. 
i6 5 
1 65 
158 
Calcar. 
earth. 
Grs. 
I IO 
96 
s 9 
Vo!. 
alkali. 
Grs. 
90 
87 
79 
Mag. 
nefia. 
Grs. 
80 
75 
7 1 
Earth of 
allum, 
Grs. 
75 
65 
55 
