[ 7 ° ] 
to whitenefs, and finely powder’d. With a flow fire, 
draw oft' in a common ftill fifteen gallons. 
Mr. Appleby conceives, that the alkali here em- 
ployed is the beft adapted to prevent the bituminous 
matter in fea -water from rifing by the heat in diftil- 
lation. 
Mr. Clark’s experiments. 
I NTO a fpoonful of the diftilled fea- water he put 
twenty drops of a folution of filver in aq. fortis : 
He likewife did the fame with the like quantity of 
common water diftilled. There appeared no change 
in either, and both retained their tranfparency. 
This demonftrates, that the diftilled fea-water is 
by the procefs intirely freed from marine fait, or its 
acid fpirit. For, if we take a fpoonful of common 
diftilled water, and add the leaft particle of fea-falt, 
with the point of a penknife, and then drop into the 
mixture one or two drops of the folution of filver, it 
will appear turbid and milky. 
From the number of animal bodies conftantly pe- 
riftiing in the fea, it may reafonably be fufpedted, 
that a volatile urinous fpirit may be retained in this 
diftilled water ; and this is evident from the follow- 
ing experiment : 
Into a fpoonful of diftilled fea-water drop ten drops 
of a ftrong folution of fugar of lead, and the mixture 
immediately becomes turbid and milky. 
Into another fpoonful of common diftilled water, 
with two drops of fpirit of fal ammoniac, add ten 
drops of a folution of fugar of lead : and this mixture 
had the fame appearance with the foregoing. 
If 
