ANNUAL ADDRESS OF THE PRESIDENT. 
LXIX 
Column D.—Comparisons by Capt. Kater. Phil. Trans., 1830, 
p. 377, and 1831, p. 347. 
Column E.—Comparisons by Francis Baily, Esq. Mem. Boy. 
Ast. Soc., Vol. 9, p. 145. 
Column F.—Comparisons by Francis Baily, Esq. Mem. Boy. 
Ast. Soc., Vol. 9, p. 120. 
Column G.—Values adopted by B. Sheepshanks, Esq. Phil. 
Trans., 1857, p. 661. 
The values used by Mr. Sheepshanks in 1848 to determine the 
length of the present Imperial standard yard were Nos. 14 D, 15 F, 
16 and 17 G, and 18 D. 
It will be observed that several different units are employed in 
the various columns of the table, aud care must be taken to allow 
for that circumstance when comparing numbers not situated in the 
same column. 
Compariso7is of the Fimdamental English Standards of Length. 
Ref. 
No. 
A. 
B. 
C. 
D. 
E. 
F. 
G. 
Inches. 
Inches. 
Inches. 
Inches. 
Inches. 
Inches. 
Inches. 
1. 
35-9929 
35-966 
2. 
36-0000 
35-993 
3. 
36-0102 
4. 
45-0494 
44.964 
5. 
35-9790 
6. 
36-0111 
7. 
36-0075 * 
36-0013 
36-002007 
. 
36-001473 
8. 
36-0000 
35-9933 
. 
. 
35-993684 
9. 
38-355 
38-3561 
10. 
. 
36-00023 
36-000802 
11. 
. 
. 
36.000659 
36-000000 
35-999624 
36-000000 
36.000000 
12. 
36-001537 
13. 
. 
. 
36-003147 
14...... 
. 
. 
36-000642 
36-00009 
36-000185 
15. 
. 
36-0000 
. 
. 
35-999921 
36-000058 
16. 
35-999716 
17. 
35-999892 
18. 
. 
. 
. 
35-99938 
19. 
. 
. 
. 
. 
36-000000 
20. 
. 
36-UOOOOp 
