+ TT 
C 35° ] 
1,0017 
t 4 -t 1.0014 
ttt 1,0008 
T-o-Vt 1,0006 
From this table it will be eafy to determine how 
much the fpecific gravity of water is increafed by 
the folution of a given quantity of fait, and, vice 
verfa , if we know the fpecific gravity of any folution 
of fait, we may form a good conje&ure of the 
quantity of fait contained in it, which obfervation 
may be of ready ufe in eftimating the fhength of 
brine fprings, and of fea water, taken up in different 
climates, or upon different coaffs in the fame climate. 
Thus, if a fait fpring, or fea water, fhould weigh _.! tr 
more, bulk for bulk, than common water ; we may 
conclude that it contains T ‘^ of its weight of fait ; if 
it hath nearly / if _‘ T , -rVi if m T T i 
and fo on : we may always find limits near 
enough to form a conclufion from, though the exadt 
number denoting the weight in any particular cafe 
fhould not be met with in the table. 
After I had drawn up the preceding account of the 
experiments which I had made, I received the Berlin 
Memoirs for 1762, publifhed laft year, in which 
there is a memoire entitled — Experiences fur le poids 
du fel et la gravite fpecifique des faumures faites et 
analyfees , par M. Lambert. In this memoire, the 
very ingenious author hath made much ufe of the 
principle, which I have endeavoured to call in queffion 
in the beginning of this paper 3 and hath calculated 
the different quantities of fea fait, which are abforbed 
into 
