ANNUAL ADDRESS OF THE PRESIDENT. 
LXXV 
only to compare the resulting systems of corrections with those found 
by Mr. Chisholm in 1873. Table I shows that according to Mr. 
Harris’ weighings all the weights have grown lighter <luring the in¬ 
terval from 1758 to 1873, while Table II shows that according to 
Mr. Freeman’s weighings some have grown lighter and others heavier, 
and that by quantities which cannot be attributed to accidental 
errors in the weighings. In view of these facts there cannot be a 
doubt that the Committee of 1758 was right in using only Mr. 
Harris’ weighings, and it seems equally certain that the numbers in 
Table I should be adopted to the exclusion of those in Table II. 
Table II. — Corrections to the Exchequer Standard Troy Weights of 1588, 
derived from the Weighings made by Messrs. Freeman and Chisholm. 
Denomination 
of 
Weight. 
Apparent 
correction 
in 1758. 
Committee’s 
correction 
in 1758 
Correction 
Mr. Cl 
in 1758. 
s given by 
lisholm 
in 1873. 
^ ounce solid __ 
Grains. 
— 0-01 
Grains. 
— 0-03 
Grains. 
0-0 
Grains. 
— 0-06 
^ ounce hollow_ 
-f 0-49 
+ 0-47 
+ 0-5 
+ 0-40 
ounce _ 
— 0-03 
— 0-06 
•0 
— 0-21 
^ ounce _ 
•05 
•11 
•0 
-36 
1 ounce -- _ 
•11 
•23 
0-0 
0-45 
2 ounces 
— 0-21 
•46 
— 1-0 
1-01 
4 ounces _ __ __ 
+ 0-08 
•42 
0-5 
0-68 
8 ounces ___ 
•16 
0-83 
0-75 
1-09 
16 ounces _ _ 
+ 0-31 
1-68 
1-75 
3-84 
eS2 ounces __ 
— 1-38 
5-36 
5-5 
3-82 
64 ounces __ __ 
— 0-75 
8-70 
— 9-0 
— 5-04 
128 ounces _ __ 
+ 13-50 
2-40 
+ 3-0 
+ 4-28 
256 ounces __ _ 
— 12-00 
— 43-81 
— 45-0 
— 53-58 
Sums _ 
± 0-00 
-- 63 62 
— 61-0 
— 65-46 
