C 32 ] 
under its furface ; and of thefe feveral obfervations 
is the following table compofed. 
Ht. Water 
Ht. Water 
Water 
Weight 
N<\ 
Heights. 
Wt. 
before 
when 
raifed. 
Water. 
immerfed. 
immerfed. 
Solidity. 
Ft. 
In. 
Pds. 
Inches. 
Inches. 
Inches. 
Pounds. 
I 
6 
02 
161 
* 9 > 3 0 
21,20 
1,9° 
2 >573 
l60,8 
2 
5 
I of 
H 7 
I 9 > 2f 
21,16 
1,91 
2,i86 
l6l,6 
3 
5 
9 i 
lib 
19,21 
2 1,06 
i,8y 
2 > 5°5 
if 6, 6 
4 
5 
140 
l 9^7 
21,21 
2,04 
2 > 7 6 3 
172,6 
5 
5 
Si 
if 8 
l 9>*3 
2 1,21 
2,08 
2,817 
176,0 
6 
5 
if 
i*8 
19,09 
2 1,26 
2,17 
2,939 
i8 3>7 
7 
i 
4 f 
140 
19, oy 
21,06 
2,01 
2,722 
17 0 ,I 
8 
5 
3i 
132 
19,01 
20,86 
1,85 
2 .f°t 
156,6 
9 
5 
4 i 
121 
18,97 
20,76 
1 >79 
2,424 
10 
i 
3f 
T46 
i8 >93 
20,66 
C 73 
2 >343 
146,4 
In making of thefe experiments, I remarked fome 
inconveniencies, which I did not at firft advert to, 
and which, at that time, I could not prevent. I in- 
tended, that each man fhould have got gently into 
the water, immerfed himfelf all but his head, and fo 
have ftaid until the motion of the water had ceafed ; 
then he was fuddenly to nave ducked his head under, 
and have continued fo a few feconds of time, until I 
had noted the rife of the water ; and, after his leav- 
ing the cittern, another was not to go in until the 
water was free from motion. Could thefe things 
have been done, as I had projected, 1 could have 
recommended the foregoing table as fufiiciently com- 
plete : but I mutt obferve, that befide the men’s being 
of different ffzes from what I had defired, they were 
in too much hatte to be difmifled (with another dram 
7 after 
