2 so Mr . nairne on Ice of Sea Water. 
THE fea-water ufed in the following experiments was 
furnifhed by Mr. owen, who keeps the Mineral Water 
Warehoule, at Temple Bar; who aflured me, that it was 
taken up off the North Foreland. 
On the 27th of January, 1766, at ten o’clock in the 
evening, I filled ajar 3^ inches in diameter and 6J inches 
deep, with fea-water, and expofed it to the open air, the 
thermometer handing at 1 5 0 . At noon the next day, on 
taking it in, I found it frozen very hard, except a very 
little at the bottom, which remained quite fluid : I now 
fet it by a ftove in a heat of 56° to thaw. The ice 
when taken in from the open air was one quarter of 
an inch above the edge of the jar. When the jar had 
continued in the degree of heat abovementioned during 
eight hours, I took out the ice, which was then 3 \ inches 
long and two inches in diameter; about two-thirds of 
the water appeared to remain. In order to clear the ice 
from any brine that might adhere to it, I waffled it in a 
pail of pump water, in w'hich it was buffered to remain 
about a quarter of an hour, and then fet it in a fieve to 
drain off the water in which it had been w aflied. 
On the 29th of January, 1776, I fet the beforemen- 
tioned ice in a bafin in a heat of about 46°, in which it 
continued nine hours before the whole was diflolved* 
The bulb of a thermometer refled on the ice during the 
time of the folution, and continued without variation at 
3 2 0 . The water thus obtained was, to my palate, per- 
fectly free from any tafte of fait. 
In 
