[ 2? ' 8 ] 
it to be 6.2 inches ; then I took a flone jug, holding 
about three Englifh pints, and turned the mouth of it 
downwards upon the fnow meafured, and where the 
ground below was fmooth, and hard; and by this 
means I took up all the fnow from top to bottom in 
the jug; this fnow I melted by the fide of a fire, and 
the 6.2 inches of fnow yielded fix tenths of an inch 
deep of water in the fame jug. After emptying the 
jug, I dried, and weighed it in a balance, and took up 
the fame quantity of fnow in it as before, weighed it 
again, and found the weight of the fnow taken up, 
and from this weight computed what quantity of 
water it fhould have produced, and found that it ought 
to have produced fix tenths of an inch and of an 
inch more : then I difiolved the fnow, and found that 
it yielded a quantity of water in the bottom of the 
jug, fix tenths of an inch deep as in the former expe- 
riment. The difference of * of an inch m the 
2, O 
depth of the water, betwixt the weight and the melt- 
ing of the fnow, was probably owing to an exhalation 
from the jug, while the fnow was melting by the fire, 
for I obferved a fleam fometimes riling from it. A 
greater or leffer degree of cold, or of wind, while the 
fnow falls, and its lying a longer or fhorter while upon 
the ground, will occafion a difference in the weight 
and in the quantity of water produced from a certain 
number of cubic feet, or inches, of fnow; but, if I 
may trad to the above trials, (which I endeavoured to 
perform with care) fnow, newly fallen, with a mode- 
rate gale of wind, freezing cold, which was the cafe 
of the fnow I made the trials upon, the 27th of March 
laff, will produce a quantity of water equal to part 
of its bulk ; or the earth, when covered with fnow, 
ten 
