SECONDARY STANDARDS. 915 
G=lb. No. 14. 
January 5, 1853. 
D. 
C. 
F. 
E. 
10-43 
10-47 
75.3-85 
11-3 
10-75 
10-8 
754-1 
11-6 
11 
11 
754-0 
11-8 
100 parts= 0*42206 grain. 
Scale. 
I + Y, G + Q+X 17-67 
17-20 
15-97 
16-19 
14-34 
14-39 
I + Y, G + Q+R+X 16-40 
16-40 
16-10 
16-10 
160-76 
Scale. 
G + Q+X, I + Y 21-62 
21-20 
19-99 
19-24 
18-17 
17-70 
G + Q + R + X, I + Y 15-35 
14-50 
14-31 
14-39 
176-47 
20(G + Q+X)£i:20(I + Y}-8R-15-71 parts. 
D. 
C. 
F. 
E. 
11-35 
11-35 
754-0 
12 
11-35 
11-35 
754-2 
12 
11-45 
11-45 
754-25 
12 
Scale. 
I + X, G + Q+R + Y 21-02 
21-41 
20-50 
20-71 
21-32 
21-05 
20-59 
20-01 
19-89 
19-90 
20~^0 
Sc£ll6 
G + Q+R + Y, I + X 19-56 
19-59 
18-84 
19-49 
18-70 
18-22 
17-52 
17-55 
17-05 
16-74 
183-26 
20(G+ Q+ Y) 20(1 + X) - 20R + 23-14 parts. 
40(G + Q)£i40I-28R + 7-43 parts, M = ll-07, F=754-06, E=ll-78. 
G + Q:iil — 0-00713 grain in air (<=11-08, 6=753-07). 
G = I — 0-02844 grain.. 
Gi^W — 0-00297 grain in air (log A=7-07832— 10). 
G=lb. No. 15. 
January 30, 31, 1851. 100 parts=0-34349 grain. 
D. C. F. E. Scale. Scale. 
I+Y, G + Q + X 18-80 G + Q + X, I + Y 18-90 
17-84 17-04 
17-26 16-46 
17-66 15-89 
10-15 10-2 749-7 11 18-30 15-54 
18-22 15-00 
16-89 15-01 
17-49 14-70 
16-35 13-69 
16-07 13-07 
174-88 155-30 
20(G + Q + X):!::20(I+Y) + 19-58 parts. 
6 D 
MDCCCLVI, 
