SECONDARY STANDARDS. 
917 
G=lb. No. 16. 
December 31, 1852. 100 parts = 0’38541 grain. 
D. 
C. 
F. 
E. 
I + X, G + Q + 5R+ Y 
Scale. 
24-06 G + Q + 5R + Y, I + X 
22-67 
10-4 
10-4 
766-2 
11-1 
c>c}^(\4. 
21-89 
21-70 
10-75 
10-75 
765-87 
11-5 
17-86 
23-24 
21-85 
11-07 
11-07 
765-7 
11-7 
.21-62 
22'19 
219T2 
20(G + Q+ Y) £120(1 + X)—100R + 19-96 parts. 
D. 
C. 
F. 
E. 
I + Y, G + Q+4R + X 
Scale. 
19-42 G + Q + 4R + X, I + Y 
17-55 
11-35 
11-3 
765-6 
11-8 
17-96 
17-77 
18-82 
11-4 
11-4 
765-5 
11-8 
18-84 
17-95 
17-07 
11-5 
11-5 
765-35 
11-9 
17-15 
17-59 
180-12 
20(G + Q + X)£:=20(I + Y')-80R-26-99 parts. 
40(G+Q)i5:40I-180R-7-03 parts, M=ll-07, F=765-7, E=ll-6l. 
G + Q£1I-0-05159 grain in air (<=11'08, 764-71). 
G = I — 0-02747 grain. 
G£!:W — 0-03636 grain in air (log A=7-07832 — 10). 
Scale. 
24-01 
21-71 
21-29 
19-82 
18- 44 
16-67 
20-17 
19- 97 
18-71 
18-37 
199-16 
Scale. 
22-02 
22-55 
19- 89 
20 - 22 
19- 19 
21-27 
21-50 
20- 57 
19- 65 
20- 25 
207-11 
G = lb. No. ]7«- 
April 8, 1854. 
D. C. F. E. 
14-2 14-2 
767-1 14-7 
100 parts= 0-30837 grain. 
Scale. 
T + D + Y, G + 2R + X 14-39 
15-44 
16-15 
16-17 
15-65 
T + D + Y, G + 3R + X 18-64 
18-69 
18-47 
18-65 
17-37 
168-59 
Scale. 
G + 2R + X, T + D + Y 24-65 
25-15 
24-29 
23-70 
24-47 
G + 3R + X, T+D + Y' 19-80 
20-37 
20-04 
18-67 
16-20 
217-34 
20(G + X) + 50R£;20(T + D + Y)-47-75 parts. 
6 D 2 
