22 Captain Kater’s account of the 
The sixTroy Pounds, 
Divisions. 
The 6 lb. weight. 
No. 2. Divisions. 
Difference 
Divisions. 
Mean. 
Difference 
in grains. 
0,0 
— 2,0 
— 2,0 "1 
— 1,0 
- 3 ’ 6 
“ 4,8 
— 5,2 
- 3,8 
— 1,6 
~ 2,2 
— 0,31 
— 2,2 
- 3,6 
— 1,4 - 
Added two-tenths of a grain to the 61 b. weight No. 2. 
+ i ,5 
- 0,5 
— 2,0 
+ 1,2 
- >>5 
— 2,7 
+ 1,7 
°>5 
— 3>8 
— 1,8 
+ 20 
-3,8 
— 7,0 
3 > 2 
— - 4,8 
— 4,6 
+ 0,2 
— E 54 
— 0,22 
■— 0,2 
— 4,8 
— 4,6 
— 2,4 
- 3,6 
— 1,2 
— 2,3 
— 3,6 
— 1, 
i ,9 
— 4,6 
— 2,7 
” 3, 3 
— 4>3 
— 1,0 J 
Added 0,17 of a grain. 
The 6 lb. weight No. 1. 
The mean of four comparisons gave for the difference of 
No. 1. from the six troy pounds, — ,2 9 - ,3 = +>01 
The mean of six other comparisons - - +,02 
The 6 lb. weight No. 2. 
The mean of four comparisons gave for the difference of 
No. 2. from the six troy pounds *—,31 + -f-,i 7 = +,06 
The mean of 1 1 other comparisons gave — ,22 -{-,17 = — ,05 
The final means of these results obtained in the same 
manner as those of the troy pounds are as follows : 
Grains. 
The difference of No. 1, from the six troy pounds is +,016 
of No. 2, - —,020 
— ,002 
The mean difference is 
