MR. H. J. CHANEY’S RE-DETERMINATION OF 
352 
After allowing for the difference between the rates of expansion of the steel 
standard 6-inch and the brass sphere, and the error of the steel standard in relation 
to the imperial yard, the diameter of the sphere is 5'992444 inches. On the sphere, 
however, two lines had been traced, for which a correction is to be made. These 
lines are triangular in section, being nearly O'Ol inch wide and 0'005 inch deep, 
therefore the actual contents of S would be at 62 c Fahr. = 112'6694096 cubic inches. 
Weighing of Sphere S in Air. 
Date, 1888. 
Description of weights used. 
(w.) 
Aw = 8443. 
Result. 
i. Fahr. 
B. inches. 
Dec. 10 
„ 11 
„ 12 
„ 17 
„ 18 
Before immersion. 
2 lb. 4- gilt lbs. Nos. 31 + 32 ; 1 
+ gilt grains 300,100, 10 . / 
2 lb. + gilt lbs. Nos. 31 + 32; 1 
+ gilt grains 300, 100, 10 . j 
2 lb. + gilt lbs. Nos. 31 + 32 ; 1 
+ gilt grains 300, 100, 10 . ( 
2 lb. + gilt lbs. Nos. 31 + 32 ; 1 
4- gilt grains 300, 100, 10 . j 
S = 28410-113 gri 
S = 28409-813 
S = 28409-802 
S = 28409-917 
2 lb. + gilt lbs. Nos. 31 + 32 ; | : g _ 
+ gilt grains 300, 100,10 
After immersion. 
28409-918 
61’65 
57- 70 
60-28 
58- 32 
58-10 
m. 
3017 
30-26 
30-37 
30-35 
30-18 
The following are the weights of air displaced by S and w respectively :— 
S displaces 
w displaces 
Dec. 10 
34'810 grains. . . 
4-198 grains. 
„ 11 • • 
. . . 35'249 „ . . . 
. . 4-245 „ 
„ 12 . . 
. . . 35'200 „ . . . 
. . 4-239 „ 
r-H 
. . . 35-193 „ . . . 
. . 4-238 „ 
„ 18 . . 
. . . 35-129 „ . . . 
. . 4-230 „ 
In normal air S displaces 34’643 and w 4T71 grains respectively; whence in 
vacuo, and in normal air, the weights in grains of the sphere are as follows :— 
