322. ESSAYS anv OBSERVATIONS 
quorfome ¢/. tart. p. d. till the effervefcence 
rceafed; and then, by evaporation and chry- 
ftallization, I procured a falt, in every refpect, 
like. the tartarus vitriolatus, as ufually pre- 
pared. 
Upon two ounces of the fame fart. folubil. 
I poured one ounce of fpirit of fea falt, made 
after Glauder’s manner ; by diftillation there 
was produced a liquor of the fame kind, with 
that of the preceedingexperiment. The re- 
maining falt indeed was not diflolved nor 
chryftallized ; but from its tafte, and by its 
precipitating a folution of filver in aq. fort. 
it appeared to to be of the muriatic kind. 
AFTER this, I made an experiment on an- 
other neutral falt in which the acid of vine- 
gar is united to the alcaline falt of tartar, — 
which is commonly known by the name of — 
tartarus regeneratus. took one ounce and — 
an half of falt of tartar, and poured diftil- 
‘Yed vinegar upon the dry falt at feveral times, — 
fhaking the glafs frequently, till fifteen oun- 
ces of the acid were employed: the veffel 
was then fet on a fand-bath, and the liquor 
gradually infpiffated till there remained four — 
ounces 27 grains of a moift, greafy, faline~ 
fubftance, of a brownith colour, like coarfe 
fugar. 
