to ascertain a Standard of Weight and Measure. 163 
Experiment the 3 d. June 16, 1 797. 
The true net weight of the sphere in air, re- " 
duced to a state of the barometer of 29,74 >= 
inches, and therm. 67°, as in last experiment _ 
Weight of the sphere, together with 'i grains, 
its scale, in water, 6,8 inches below >= 484,20 
the surface; the thermom. at 66°, 1 „ 
Deduct the weight of the scale in water 435,09 
The difference is the net weight of 
the sphere in water, of the tern- \= 49,11 
perature 66°, 4 
To which, add the correction for the 
wires of the scale being immersed 
5,5 inches deeper now, than when > -(- ,44 
its weight in water was determin- 
ed (see table, §. 23.) 
The corrected net weight, in water, becomes 
Which, deducted from its net weight in air, 
leaves the weight of a bulk of water == the 
grains. 
28722,42 
sphere, and 6 inches below the surface, with 
the heat of 66°, 4 - - - j 
Correction for o°,4 of heat (see table, §. 23.) 
The true corrected weight of a bulk of water 
— the sphere, in the heat of 66°, o, and with 
a pressure of the barometer of 29,74 inches, j 
and 6 inches below the surface - J 
= 4 9>55 
28672,87 
+ i>8i 
>■ 
S' 
0 
C'sn .4 
/ t ^ *> 
■t'iS 7 Qh 
O'OOMJ^ 
28674,68 
(§. 30.) Results of the Observations of the Sphere collected . 
Correct weight of a bulk of water = sphere, the 
barom. being at 29,74 inches, therm. 66°, o. 
By the 1 st observation - 
2d observation - 
3d observation - 
Mean of all 
grams. 
28672,79 
28673,06 
28674,68 
28673,51 
At a depth be- 
low the surface 
of the water, 
inches. 
5.6 
3.7 
6.8 
5,37 
'jCT 3 / 6 & 
•V' s 
