[ 347 ] 
might be allowed for. It ought, at the fame time* 
to be obferved, that a given bulk of the water with 
which the fpecific gravities are compofed, will have 
. different weights when the heats are different } and 
thefe differences ought firft to be afcertained. 
Experiment X. 
Having thus determined the fpecific gravities of 
faturated folutions of feveral falts, in a given degree 
of heat ; my next enquiry was to find the fpecific 
gravities of water impregnated with a given quantity 
of the feveral falts: I accordingly diffolved in 168 
pennyweights of water, 14 pennyweights, or T *_ of 
the weight of the water of the eight following falts* 
The thermometer was at 40° and barometer at 29I. 
A Table of the fpecific gravities of water impreg* 
nated with of its weight of 
Water 1,000 
Sea fait 1,059 
Blue vitriol 1,052 
Nitre 1 ,650 
White vitriol 1,045 
Green vitriol 1,043 
Glau. falts Lym. 1,039 
Glau. falts Genu. 1,029 
Salammon. 1,026 
I could not have made this table much more ex- 
tenfive, fince in the 40th degree of the thermom. 
Y y 2 water 
