SECONDARY STANDARDS. 
913 
G = lb. No. 11. 
January 6, 1853. 100 parts=0*41459 grain. 
D. 
C. 
F. 
E. 
Scale. 
Scale. 
I + X, G + Q+2R + Y 
25-89 G + Q+2R + Y, I + X 
24-55 
10 
10 
749-9 
10-8 
25-85 
23-57 
25-57 
22-34 
24-59 
21-65 
24-52 
21-04 
10-27 
10-27 
749-6 
10-9 
22-55 
20-85 
23-19 
19-86 
22-55 
19-75 
10-45 
10-45 
749-03 
10-9 
22-27 
19-62 
22-51 
19-32 
239-49 
212-55 
20(G + Q+Y)£!:20(I + X)-40R + 26-94 parts. 
D. 
C. 
F. 
E. 
Scale. 
Scale. 
I + Y, G + Q+R + X 
18-57 G+Q+R + X, I + Y 
20-96 
10-53 
10-6 
748-8 
11 
19-01 
21-40 
18-15 
20-30 
17-57 
20-86 
17-21 
19-17 
10-8 
10-8 
748-8 
11-1 
17-25 
19-42 
16-37 
18-12 
16-26 
18-75 
10-85 10-85 748-75 11-5 
lb-04 
15-35 
17-74 
17-32 
171-78 
194-04 
20(G + Q + X) 20(1 + Y) - 20R - 22-26 parts. 
40(G + Q)il:40I-60R + 4-68 parts, M=10-49, F=749-14, E=ll-03. 
G + Q— I — 0-01648 grain in air (i=10-49, 6=748-25). 
G=I — 0-04208 grain. 
GiiW— 0-01499 grain in air (log A=7'07832 — 10). 
G = lb. No. 12. 
December 28, 1852. 100 parts= 0-39337 grain. 
D. 
C. 
F. 
E. 
I+Y, G + Q+X 
Scale. 
17-57 
16-66 
G + Q + X, I + Y 
Scale. 
19-24 
17-70 
10-4 
10-4 
752-4 
11-4 
17-92 
17-77 
20-52 
' 
19-00 
18-54 
21-50 
10-8 
10-8 
752-5 
11-5 
19-99 
19-57 
19-79 
20*17 
19-70 
19-59 
10-73 
10-73 
752-5 
11-5 
19-40 
18-72 
187-91 
18-62 
18-90 
192-96 
20(G + Q + X)£b20(I + Y)— 5-05 parts. 
