820 PROF. W. H. MILLER ON THE CONSTRUCTION OF THE NEW STANDARD POUND. 
the number of comparisons of Sp with U, and of T with Sp is about twice as large as 
the number of comparisons of RS with U, and T with RS, 
T=U— 0-52857 grain = 5759-47143 grains. 
During the comparisons of Sp and RS with U in Somerset House, the mean value 
of t was I 8 - 7 , and that of b was 755-64. 
T displaced 0-32605 grain of air, U displaced 0-84717 grain of air. 
Hence T^^U— 0-00745 grain in air (^=18-7, 6=755-64) in Somerset House. 
Comparisons of the auxiliary weights in January and February 1845. 
The comparisons of the auxiliary weights among each other, after their second 
adjustment, were made with ray 10|^-inch Robinson. The comparisons of 
A+B+C+H-1-F with T were made with Babrow’s balance. 
February 22 and 24, 1845. 100 parts =0*17274 grain. 
S=A + B + C + D + F. 
T+X. 
S+Y. 
T+Y. 
S+X, 
22*00 
20*06 
19*16 
20*65 
21*05 
29-37 
21*52 
21*50 
22*16 
20*50 
23*17 
22*73 
21*46 
20*52 
23*86 
21*00 
22*73 
21*21 
20*88 
20*47 
22*71 
21*31 
21*60 
20*67 
23*21 
21*32 
20*93 
21*10 
23*53 
21*68 
21*20 
21*67 
23*68 
21*50 
22*50 
21*40 
24*05 
22*00 
21*61 
21*77 
23*27 
21*23 
21*65 
21*26 
249*85 
231*70 
238*08 
234*22 
11(T + X) = 11(S + Y) + 18*15 parts. ll(T + Y}=ll(S + X) + 3*86 parts. 
T=A + B + C + D+F+0*00173 grain. 
Jan. 29, Feb. 5 and 6, 1845. 100 parts =0*3063 grain. 
A, F+G. 
F+G, A. 
B, F+G. 
F+G, B. 
1*80 
2*29 
3*35 
3*15 
1*95 
2-28 
3*46 
3*01 
2*45 
2*57 
3*20 
2*65 
2*75 
3*75 
3*35 
2*85 
3-00 
3*59 
3*90 
3*05 
3*39 
3*35 
4*14 
2*85 
2-97 
2*50 
3*66 
1*69 
2*05 
2*30 
2*73 
1*80 
2*65 
2*50 
3*41 
1*76 
1*94 
2*51 
2*50 
2*13 
2*21 
1*93 
2-60 
1*28 
2*29 
2*86 
3*00 
2*09 
2*20 
2*69 
2*88 
1*95 
2*55 
2*73 
3*00 
1*75 
2*71 
3*44 
3*18 
2*80 
2*71 
3*56 
3*08 
2*15 
2*66 
2*86 
3*16 
2*65 
42*28 
47*71 
54*60 
39*61 
A=F + G 
— 0*00049 grain. 
B=F + G + 0*00135 grain. 
