838 PROF. W. H. MILLER ON THE CONSTRUCTION OF THE NEW STANDARD POUND. 
Resulting values of APC No. 2 and logAPC No. 2. 
APC No. 2. 
logAPC No. 2. 
21-1656 
1-325631 
21-1640 
1-325599 
21-1631 
1-325579 
21-1633 
1-325584 
Mean 
21-1640 
1-325598 
1 0 — log A 
8-674402 
PC No. 2 (reduced) 
7000-002 
3-845098 
vPC No. 2 
330-750 
2-519500 
Observations for Jinding the density of PS. 
Apparent weight in water of the hook and wire by which PS, PC No. 3 and 
PC No. 4 were suspended in water. 
The weight of 123‘6 inches of the platinum wire by which the weights were sus- 
pended was 38‘815 grains. Hence one inch displaces 0'01365 grain of water. 100 
parts of the micrometer scale correspond to a displacement of 0’01365 grain of water. 
With 110 grains in each pan, 100 parts =0‘2559 grain. With the hook suspended 
in water, 100 parts =0‘2559 grain +0'01365 grain =0’27 grain. The upper hook by 
which the wire was attached to the scale-pan was changed twice during the weighings. 
March 27? 1845. Hook in water. 
In right-hand pan. 
gr- 
Scale. 
0-00 
18-2 
0-02 
20-2 
0-00 
18-9 
0-02 
20-6 
0-00 
18-9 
0-02 
20-5 
0-00 
20-5 
0-00 
18-5 
0-02 
19-5 
0-00 
18-9 
0-00 
20-0 
0-0073 
1 
1 6^ 
Counterpoise balances hook in water 
+ 0-0086 gr. in air. 
In right-hand pan. 
gr. 
Scale. 
(64) + (32) + (8) + (4) + (l) + 0-88 
21-75 
+ 0-87 
18-82 
+ 0-88 
22-12 
+ 0-87 
18-55 
0-875 
20-31 
C.poise bal. (64) -P (32) -I- (8)-)- (4) -I- (1)4- 0-8742 gr. 
H. in w.£!;(64)-1-(32)-1- (8)4- (4)-|-(] ) -p 0-8656 gr.in a.: 
April 1, 1845. Hook in water. 
In right-hand pan. 
g'’- 
2-30 
2-30 
2-30 
19*0 
2-30 
19-2 
2-32 
21-2 
2-30 
20-8 
2-30 
19-5 
2-3029 
19-94 
Counterpoise balances hook in water+ 2-3031 gr. in 
In right-hand pan. 
gr- 
Scale. 
K + (32) + 0-18 
19-65 
+ 0-18 
19-72 
0-180 
19-68 
Counterpoise balances K + (32) + 0-1 808 grain. 
Hook in water ilK + (32) — 
•2-1223 grains in air. 
April 5. Hook in water. 
In right-hand pan. 
gr- 
Scale. 
2-30 
20-2 
2-30 
20-4 
2-28 
20-5 
2-24 
12-0 
2-36 
25-5 
2-24 
7-0 
2-34 
26-0 
2-30 
21-0 
2-30 
22-3 
2-30 
22-5 
2-296 
19-5 
Counterpoise balances hook in water -p 2-2972 gr. in air. 
Scale. 
19- 9 
20 - 0 
