PHYSICAL ann’ LITERARY... 337 
than filver does, and’ the laft more’ than the 
_ Aeaigd ing. 
Here then we have a feries of bodies: 
from filver'to ‘falt of tartat; whofe attractive 
_ powers, with refpect to the fame faline li- 
quor, are continually increafing ; but, whe- 
ther uniformly or in any certain proportion, 
is not eafy to’ determine: there may be found) 
a body which*attracts the acid of nitre more 
than the firft, and lefs than the fecond, ‘and 
fo thro’ other degrees; which can only be’ 
afcertained by a great variety of trials. 
As the falt of tartar, or any ftrong 
fixt alcaline falt, is the ftrongeft attracter of 
the nitrous acid, and throws down or fepa-. 
rates any other body that’ has been diffolved 
in it ; fo. it likeways attracts every other acid, 
and disjoins it from whatever it has diffolved : 
_ therefore we may confider shat falt as a ftand- 
_ dard whereby to compare the feveral attractive 
Brewers of the different acid liquors. But it 
is certain, from the experiments that have 
been related, that, if three parcels of the fame. 
‘fixt alcaline falt, are joined to the three dif- 
4 ferent acids of nitre, fea falt, and vinegar, and 
“if oil of vitriol is poured upon each of thefe 
faline mixtures or compound falts;, the vitrie! 
(Woes olic 
