934 PUOF.W. H. MILLER ON THE CONSTRUCTION OF THE NEW STANDARD POUND. 
G = lb. No. 36. 
D. 
c. 
F. 
7-4 
7-35 
755-6 
7-55 
7-5 
D. 
c. 
F. 
7-65 
7-6 
755-6 
7-8 
7-75 
E. 
8 
100 parts=0'28057 grain. 
Scfllc 
T + D + Y,G+R + X 23-57 G + R + X,T + D + Y 
19-09 
18-51 
19-22 
17-69 
17-90 
115-98 
1 2(G + X + R) 1 2(T + D + X) - 22-37 parts. 
E. 
T + D + X, G+R + Y 
8-2 
Scale. 
16-91 G + R+Y, T+D + X 
16- 97 
17- 64 
17-76 
16-61 
16-54 
102-43 
12(G + Y+R)£:hl2(T + D + X) — 19-24 parts. 
24(G + R)£h24(T+Dj— 41-61 parts, M=7-5, F=755-6, E=8-l. 
G£hT + D — 0-01618 grain in air (^=7-48, 6=755-05). 
G = 1 — 0-04480 grain, 
G — W — 0-00206 grain in air (log A=7-07832 — 10). 
Mean...G=I — 0-04484 grain. G^W— 0-00207 grain in air (log A=7-07832— 10). 
Scale. 
28-29 
23-11 
22-09 
21-70 
22-11 
21-05 
138-35 
Scale. 
20-04 
20-06 
20-52 
20-50 
20-45 
20-10 
121-67 
The 10-/6. Weight. 
A weight of 10 lbs., or the weight of a gallon of water, protected by electro-gild- 
ing, was constructed by Mr. Oertling. Let D denote the sum of the secondary 
standards. Nos. 9, 11, 12, 13, 14, 16, \7a, 176, 29,30; E the sum of Nos. 18, 19, 
21, 22, 23, 24, 25, 27, 28, together with a weight Pd, for which t>Pd=822-792, 
Pd ibW-p 0-00169 grain in air (log A = 7'07832— 10) ; F the sum of Nos. 1, 2, 3, 
4, 5, 6, 7, 8, 10, 26; T the weight of 10 lbs. The balance employed, made by 
Mr. Oertling and lent by him for the purpose of weighing T, has pans capable of 
being interchanged without taking out the weights contained in them. The weights 
of the pans will be denoted by X and Y. Each end of the beam carries a pointer, 
behind which is fixed an ivory scale with about 50 divisions to an inch. Every fifth 
division is marked by a longer line. The interval between two such consecutive lines 
is one part of the scale. The reading increases on placing a small weight in the 
left-hand pan. The index and scale were viewed through a telescope placed at a 
distance of about 12 feet from the scale. The absolute weight of water (/= 14-87) 
displaced by T was 8378-8 grains. Hence Fr=8379-4. i;D = 8561-006, 17E.-8538-336, 
yF = 8492-141. In air for which log A = 7‘07832— 10, D:£ 2 : 10 W — 0-06794 grain, 
E:i 2 : lOW-f-0‘02612 grain, F ^ lOW-1-0-08487 grain. 
