296 Dr. Wrruerine’s Experiments and Obfervations 
D. To a faturated folution in marine acid mild fixed vege- 
table alkaly was added; the earth was precipitated, and a quan= 
tity of fixed air efcaped. 
2. The fame thing happened when mild foffil alkaly was 
added. 
3. When cauftic vegetable alkaly was ufed, the precipitation 
‘took place, but without any appearance of effervefcence. 
4. 50 parts diffolved in marine acid loft, during the folu- 
tion, nearly 10,5. ‘This folution, upon the addition of cauftic 
vegetable alkaly, Jet fall a precipitate which, when wafhed and 
dried, weighed 45,5. 
5. Phlogitlicated alkaly precipitated the whole of the earth 
from part of the folution D; for mild fixed alkaly afterwards 
added to the filtered liquor occafioned no further precipitation. — 
E. Part of the precipitates D. 1. 2. after expofure to a ftrong 
heat in a crucible, was thrown into water. Next morning the 
water was completely covered with an ice-like cruft, and had 
the acrid tafte of lime-water in a very high degree. | 
2. The fmalleft portion of vitriolic acid added to this water 
occafioned an immediate and copious precipitation ; and when 
this acrid water was diluted with 200 times its bulk of pure 
water, the precipitation upon the addition of vitriolic acid was 
yet fufficiently obvious. 
3. A fingle drop of this acrid water, added to folutions of 
tartar of vitriol, GLAuUBER’s falt, vitriolic ammoniac, alum, — 
Epfom falt, felenite, occafioned an immediate precipitation in 
all-of them. | 
F. The precipitate thrown down by the cauftic vegetable 
alkaly (D. 3.) was put into water, in expectation that it would 
make lime-water; but neither upon ftanding, nor after boil- 
ing, did this water exhibit any precipitation when concentrated 
vitriolic 
