[ 2 + 1 
The water, as it grew warm, became turbid, and 
difcharged air bubbles, depofiting at the lame time 
an ochry fediment at the bottom. Thefe ap- 
pearances ceafed before eight ounces were drawn off 
by diftillation. 
The diftilled water, proving on examination, to 
be no wile different from common diftilled water, 
the diftillation was difcontinued ; the contents of the 
retort were poured into a white bafon ; on Handing 
a night to fettle, the liquor in the bafon feemed clear, 
and a yellow fediment was feen at the bottom ; the 
clear liquor was decanted into another bafon. 
The fediment carefully dried, weighed near four 
grains, and proved to be chiefly ferruginous. 
The clear liquor was fuffered to evaporate, by the 
heat of the atmofphere, in the month of Auguft ; 
.pellicles were formed fuccefiively on the furface, 
which breaking in a little time fell to the bottom j 
this continued until there remained about two ounces 
of liquor, which was poured carefully from the pel- 
licles into a cup, and was fet to evaporate in a mo- 
derate heat. The dried pellicles weighed 30 grains. 
They were infipid, gritty, and not foluble in water. 
Experiment III. 
Six grains of the pellicles, expofed to a ftrong 
fire, in a covered crucible, for three hours, became 
reddifh when cold, and loft a grain in weight ; but 
feemed not altered in other refpe&s. 
Experiment 
