[ 101 ] 
be quite dry, and each piece being weighed, was found 
as follows j 
Gr. Gr. 
N® I weighed 45 the fait fuppofed to be contained was 3 
2 46 3 -£ 
3 59 ^ 
4 55 
5 44 ^ 
All 5 weigh. 249 
fait gained 154 
But on their being hung near a fire for 72 hours, 
until perfedly dry, no fait appeared to be imbibed, 
for the above numbers weighed as follows ; having 
lofi: by extraordinary drynefs about of their firfi: 
weight. 
N° I weighed 40 Grains, having loft 2 Grains 
2 42 4 
3 54 3 
4 53 3 
5 43 3 
232 
15 
Experiment VII. 
For the fake of the greater exadnefs, another float 
(marked C) was made of two cubes of cork, amount- 
ing to 164 grains; the larger 118, and the fmaller 
46 grains ; this was put kito the fame velTel of river 
water, after it had been 96 hours in a warm cham- 
ber, and fupported a medallion of lead weighing 
766 grains ; it was left in the water for 36 hours 
longer, and weighed again, when it was found to 
fupport 754 grains, having loft 12 grains of its 
buoyant force in that fpace of immerfion. From this 
fecond experiment does it not appear, that this lofs 
of 
