and attraBlve Powers of various f aline Subfiances. i j 
The fpecific gravity of the h rouge ft 
fpirit of fait, made in the ufual way, is, 
according to Mr. baume, 1,187, and ac- 
cording to Mr. bergman, 1,190; but 
we read in the Paris Memoirs for the 
year 1700, p. 19 1. that Mr. homberg? 
palled' a fpirit whofe fpecific gravity was 
1,300 ; and that made by Dr. priestley 
(fee vol. III. p. 275.) muft have been, 
about 1,500. 
Hence we fee, that fpirit of fait, 
whofe fpecific gravity is 1,261 or lefs, 
has little or no attraction with water, anch 
therefore attracts none from air, and on 
that account does not heat a thermometer 
whofe ball is dipped in it as fpirit of vi- 
triol and fpirit of nitre do, as has lately 
been obferved by the Friendly Society of 
Berlin. 
This table is not exactly accurate, as 
I had notin this firft experiment found 1 
the point of faturation as nicely as was' 
requifite. However, I have not corrected' 
it, as the error is but fmall, and the- 
proportion may at any time be found by 
calculation ; at leaf! when the fpecific 
gravity of this fpirit does not exceed' 
1,253. Whether the mathematical fpecific gravity and that by 
obfervafion differ in the higher degrees of fpecific gravity, I have 
not examined 1 but the table is formed on the fuppofition that* 
they do not. 
Marine 
acid. 
W a ter. 
Specific 
Gravity. 
Parts. 
Parts. 
50 
G 497 
60 
U 43 x 
70 
1,381 
80 
G 34 i 
90 
i,3°8 
100 
1,282 
1 10 
G 259 
120 
1,246 
130 
‘ 1,223 
140 
1,209 
150 
r,i 9 6 
160 
1,185 
170 
1 5 1 75 
180 
1,166 
, 190 
M 5 8 - 
200 
UDi 
■ 
210 
1,144 
220 
I , I 3 8 
«N 
DO 
230 
1,132 
240 
1,127 
250 
1,122 
260 
1,118 
270 
1,114 
280 
1, 1 10 
290 
1,106 
3 °° 
1,103 
310 
1,100 
320 
1,097 
- 
330 
1,091 
340 
1,089 
350 
1,086 
360 
1,084 
370 
1,082 
3 So 
1,080 
39 o 
1,078 
400 
1,076 
1 410 
1,074 
Common 
