2 66 Dr. Falconer's Remarks on the 
placed the jars upon the ground, and moiftened 
the outfide, and covered them with cool and 
fucculent leaves, as of lettuce, &c. in order that 
the water might retain the cool temperature it 
had thus acquired.” * 
The modern method of making ice in the 
pad Indies, refembles the above in many refpe&s. 
Pits are dug in large open plains, places mod 
ejcpofed to circulation of air, 4nd of confequence, 
to evaporation: thefe are ftrewed with reeds, in 
order to admit the circulation of air on all Tides, 
and on thefe are placed (hallow pans of earth 
filled with water, and the texture of thefe pans is 
fo porous, as to admit the water to percolate 
through them, in fuch a manner, as to keep the 
outfide always moiflr, and of confequence, pro¬ 
ducing cold by evaporation. The water ufeci 
for this purpofe has alfo been previoufly boiled. 
It is needlcfs to remark, how much this procefs 
refembles thofe before quoted, and how probable 
it is, from the immutability of ancient manners, 
that it was a cuftom delved frorp very remote 
antiquity. 
HI. Some other difcoveries, fuch as, cc The folu- 
tion of water in air, and that this folution is afiifted 
by heat and agitation,” appear not to have been 
unknown to the ancients, though their notion? 
hereupon were far from clear. 
* Galen Comm, in Lib. VI. Epidem. Hippoc. Comm. IV. 
Thq 
