SECONDARY STANDARDS. 
929 
D. C. F. E. Scale. 
762-2 8-3 T + D + X, G + 2R + Y 14-95 G + 2R + Y, T + D + X 
14-74 
15-31 
16-15 
7-9 7-93 16-26 
16-02 
17-05 
16-75 
15-60 
15-30 
158-12 
20(G + Y)+ 40Rii20(T + D + X) — 7-22 parts. 
40G + 68R£1:40(T + D)-20-98 parts, M=7-74, F=762-2, E=8-3. 
GilT + D — 0-02053 grain in air (^=7*72, Z)=76l-62). 
G = I — 0-00072 grain. 
Gill W + 0-00052 grain in air (log (\=7-07832 — 10). 
A mean of the two series of comparisons gives — 
G = I — 0-00170 grain. 
GiiW — 0-00044 grain in air (log A = 7*07832— 10). 
G=lb. No. 31. 
100 parts =0-28531 grain. 
D. 
c. 
F. 
7-6 
7-6 
739-7 
7-9 7-85 
8 8 
739-6 
D. 
C. 
F. 
8-13 
8-1 
8-2 
8-2 
739-65 
8-3 
8-25 
739-65 
8-35 
8-3 
E. 
T + D + X, G + Y 
8-2 
8-4 
24(G + Y) 24(T + D + X) - 
E 
T + D + Y, G + X 
8-6 
8-6 
Scale. 
18-60 G + Y, T + D + X 
18- 57 
19- 04 
18-40 
17-55 
17-44 
17-04 
17-86 
17-67 
16-70 
16- 60 
17- 01 
212-48 
;-3 parts. 
Scale. 
15- 80 G + X, T + D + Y 
16 - 16 
16-85 
14- 84 
16-70 
15- 46 
16- 79 
15- 02 
16- 41 
15-21 
15-57 
15-75 
190-56 
24(G + X)0:24(T + D + Y)+ 17-55 parts. 
48G^48(T + D) + 15-25 parts, M=8-01, F=739-65, E=8-45. 
Gi!:T + D + 0-00091 grain in air (<=8-0, §=739-08). 
G = I — 0-04410 grain. 
G£iW+ 0-00088 grain in air (logA=7-07832 — 10). 
Scale. 
15-34 
15-55 
1 5- 06 
16- 41 
18-32 
17- 14 
16- 45 
17- 97 
16-45 
16-65 
165-34 
Scale. 
19-81 
19-26 
19-11 
19-06 
18-46 
18-.52 
17-22 
17-39 
16-47 
16-45 
16-92 
16-11 
214-78 
Scale. 
15-45 
15-16 
14-75 
14-41 
14-90 
14-02 
14-67 
14-02 
13- 45 
14- 70 
13-59 
13-89 
173-01 
