882 PROF.W. H. MILLER ON THE CONSTRUCTION OF THE NEW STANDARD POUND. 
be (calculated with the same data that were used in calculating the density of sub- 
tracting O'OOOIS from log/3 on account of the difference between the force of gravity 
in Altona and in Paris. The same expansions of platinum and bronze are to be used 
in calculating the weight of the air displaced by the weights used in weighing ^ in 
water, as were used in calculating their volumes. 16°’24 C.=6l°'23 F., 762’68 mm. 
= 30*027 in., 15°*0 C.=59°*0 F. 
Weight of air displaced by the weights used in weighing in water. 
30-027 
1-47751 
30-027 
1-47751 
61-23 
5-61139 
61-23 
5*61139 
at 61-23 
2-51963 
vh at 61-23 
2-51969 
0-40600 
9-60853 
0-40606 
9-60859 
30-027 
1*47751 
30*027 
1*47751 
61-23 
5-61139 
61-23 
5-61139 
v[(2) + (l)-|- 0-483 gr-] at 61*23 
9-21641 
^,[P + Q-f R] at 61-23 1-92286 
0-00020 
6-30531 
0-10275 
9-01176 
Weight of air displaced by the weights =i 
0-40600 gr.-l- 0-40606 gr.-h 0-00020 gr.-|- 0-10275 gr.=0-91501 
Calculation of the volume and density of (25. 
Apparent weight of ((t in water 
.. 14703-48556 
Weight of air displaced by the 
weights 
0-91501 
Weight of (£ in water 
.. 14702-57055 
Weight of (£ 
.. 15432-32653 
Weight of water (<=.’>9-0) displaced 
729-75598 
2-8631777 
Max. density of water : A water at 59°-0 F 
0-0003606 
A pt. at 59°-0 F. : A pt. at 38° F 
9-9998326 
v(£ 
730-081 
2*8633709 
(£ 
.. 15432-.327 
4-1884315 
A(!E 
21-13783 
1-3250606 
^31 — 7S1’014. Hence the volume of 91 — the volume of (j!5, at the freezing-point, is 
equal to the volume of 20*933 grains of water at its maximum density. 
Comparison of (25 with 91. 
The zero of the scale of the barometer was 180 mm. below the middle of the weights, 
consequently 0*02 mm. must be subtracted from the height of the mercury in the 
barometer. The left-hand pan contained a counterpoise, and 91 and (25 in the detached 
scale-pans, the weights of which are denoted by X and Y, were suspended alternately 
from the agate-plane which rested on the right-hand knife-edge. 
September 28, 1844, 
(!F+Y. 
Q+x. 
22-71 
21-00 
23-36 
22-40 
25*20 
23*63 
25-62 
23-96 
24-77 
24-24 
24-76 
24-77 
24-51 
24-02 
24-46 
24-46 
100 parts = 
0*49579 grain 
e+x. 
c= 17-0 
21-13 
F = 76l-67 
23-37 
E= 16-55 
23-58 
23-67 
24-10 
23-25 
23-50 
24-61 
a+Y. 
23-22 
C= 
17-25 
23-29 
F = 
760-3 
23-21 
E= 
17*0 
24-18 
23-66 
23- 17 
24- 88 
24-17 
