936 PROF. W. H. MILLER ON THE CONSTRUCTION OF THE NEW STANDARD POUND. 
Scale. 
T+X, F + Y 10-41 
10-52 
11-30 
10-89 
10-86 
T + Y, F + X 10-96 
10-00 
10-30 
10-94 
10-40 
106-58 
Scale. 
F + Y, T + X 10-36 
11-76 
11-84 
10-41 
11-67 
F + X, T+Y 10-15 
9-91 
9-62 
9-35 
9-45 
104-52 
20T ^ 20F + 2-06 parts. 
T£1:F+0-0140 grain in air (^=17-6, 5 = 754-9). 
T£i:10W + 0-0986 grain in air (log A= 7-07832 — 10). 
Mean T£h 10 VV+ 0-1 11 grain in air (log A=7-07832— 10). 
Hence the 10-ib. weight appears to be O’l 11 grain heavier than ten commercial 
pounds of the density of the lost standard, weighed in air, thermometer 65°‘67 F., 
barometer 29'78 inches, the mercury being reduced to the freezing-point (5=18'7, 
6=:755'64) at Somerset House. 
Exchequer Kilogramme. 
A kilogramme of gun-metal protected by electro-gilding, was constructed by 
Mr. Oertling for the use of the Exchequer. The absolute weight of the water 
(5=17*29) displaced by it was 1852*212 grains. Hence, denoting this kilogramme 
by 1852*82, logtiBl = 3*267834, Al^=8*32910. Let 91 denote the Kilogramme 
des Archives, C the English kilogramme of platinum. L the kilogramme type 
laiton, and let (B denote together with a bit of platinum wire, the weight of which 
was 1*40002 grain, by a mean of six comparisons with the following weights belong- 
ing to Barrow’s balance: — 1 gr.-l-0*4 gr., and 1 gr. -1-0*3 gr.-f- 0*1 gr. 
100 parts=0-68159 grain. 
®+Y. 
®+X, <9+Y. 
C9+Y, ®+X. 
e+X, (S+Y. 
13-76 
14-07 
15-72 
18-26 
19-24 
16-94 
17-17 
18-42 
18-70 
C= 14-7, D=14-65 
18-05 
II 
D=15-3 
18-17 
18-05 
17-50 
16-69 
18-24 
18-61 
19*25 
17*96 
17*72 
17-94 
19-29 
15-27 
18-15 
17-64 
F=762-6, E=15-5 
19-19 
17*00 F=762-6, 
E=15-6 
17*99 
18-10 
18-05 
16-07 
16-31 
18-01 
17-70 
14-51 
15-47 
17*17 
C= 15-1, D=15-l 
18-54 
14-45 C= 15-55, 
D = 15-57 
18-21 
16-50 
18-45 
15-87 
16-19 
17-99 
1 8-36 
15-89 
17*00 
211-71 
215-39 
191-72 
210-13 
48(© A: 48® + 22-09 parts. 
ia+l-39687grain A® in air (^= 15-17, 5=761-13). 
displaces 2*26684 grs. of air; (0 — 1*39687 gr. of platinum displaces 0*89281 gr. of 
air. Therefore 1^ = 0 — 0*02284 gr. But C=9[— 0*02412 gr. Hence 
1^ = 91 — 0*04696 grain. 
