346 
MR. H. J. CHANEY’S RE-DETERMINATION OF 
The lines traced on C have the effect of diminishing its cubic capacity ; these 
lines are V-shaped, and have a depth of nearly 0'018-inch, with an average breadth 
at the top of 0'01-inch. There are 24 vertical lines, each nearly 9 inches long; 
three circular lines, each nearly 28 inches long; besides two circular lines nearly 
] 4 inches long. The edges also of the cylinder were not quite sharp. 
If, therefore, the diameter of C is taken at 9'00115 inches, then the cubic 
contents of C may be taken at 572-80365 cubic inches. 
Weighing of Cylinder C in Air. 
Date, 1888. 
Nov. 16 
„ 19 
„ 22 
„ 29 
Description of Weights 
used ( w ). 
Result. 
Befor 
e immersion. 
14, 7, 4, 1 lb., R;* 2, 1 oz.; 
8 dr.; 100, 30,10, 5 grains 
14, 7, 4, 1 lb., R;* 2, loz 
8 dr.; 100, 30,10,5 grains | 
C w + 0'086 grain . 
Or C = 183676 25 + 0'086 
grains. 
C- :£ w + 0'009 grain . 
C = 183676-25 + 0'009 
grains. 
After immersion. 
14 lb.8 dr.; 100, 30, f 
10, 5 grains.| 
14 lb.8 dr.; 100, 30, 
10, 5 grams. 
C Ci iv + 0 - 998 grain . . 
Or C = 183675-25 + 0-998 
grains. 
l - 052 grain . 
C = 183675-25 + 1-052 
grams 
Mean t. Barometer. 
Fahr. Inches. 
57-5 
57-3 
60-1 
58-2 
m. 
29-98 
29-98 
30-22 
29-34 
The following are the weights of air displaced by C and iv respectively. 
The density of the weights used (w) was 8'0298, but their values were always 
corrected to the density of 8T430, or to the density (A) of the brass representative 
of the Imperial Standard Pound adopted in this country. 
1888, Nov. 16 
33 
3? 
C displaces 
177'03 grains 
177'63 
178'66 
173*50 
w displaces 
28"20 grains. 
28T0 
3 3 
28-27 
27-45 
3 3 
3 3 
In normal air, C displaces 176 08, and w 27"47 grains, whence the weight, in grains, 
of the cylinder was taken as follows :— 
In vacuo. In normal air. 
C = 183797*198 grains . . . 183676*066 grains. 
* R, Reference Avoirdupois Standards ; having small errors in relation to the present Imperial 
Pound, which errors were allowed for. 
