lii Introduction to the Makerstotjn Observations, 1843. 
73. With the exception of the results of the values of where the com- 
parisons have heen of the readings on one day with those on the next following, the 
results are remarkably consistent for all intervals, and in no case does the result 
amount to that by temperature experiments ; as an evidence, however, that the first 
results differ from the others only accidentally, the following is given, which con- 
tains all the comparisons made of the readings on one day with those on the day 
immediately following, with the exception already mentioned for the balance magnet, 
No. 68 :— 
Table 21. — Results of Comparisons with One Day's Interval. 
Period compared. 
No. of 
comparisons. 
2 A t 
2 A x 
9- 
1844. 
Sc. Div. 
Sc. Div. 
May 9— May 24 
11 
884-8 
1792-6 
2-03 
May 29 — June 28 
26 
1262-8 
19S9-8 
1-58 
July 17— July 31 
11 
504-5 
691-9 
1-37 
Sept. 2— Sept. 25 
19 
8340 
1551-9 
1-86 
Nov. 26— Dec. 13 
15 
842-9 
1563-2 
1-85 
All the Periods 
82 
4329-0 
7589-4 
1-85 
In this case it will also be remarked, that no partial result is as great as that 
from the temperature experiments. 
74. As a farther evidence that the result obtained for this instrument is also 
independent of any cause, such as has been already suggested for the balance needle, 
the following Table contains the results of the comparisons on the same days as 
those already given for the balance needle, and on which the differences of tempe- 
rature depend on artificial heat :-— 
Table 22. — Results of Comparisons when the Differences of Temperature depend 
on Artificial Causes. 
Day of 
com- 
parison. 
Bays compared with 
No. of 
compa- 
risons. 
SA(T) 
s A 00 
2A(*) 
Error of 
coefficient. 
Resulting 
coefficient. 
1843. 
1843. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Jan. 23 
Jan. 18—21, 24—28 
9 
+ 63-4 
130-2 
+ 36-3 
+ 0-29 
161 
Mar. 13 
Mar. 16—21, 
5 
-21-2 
28-1 
-14-6 
-0-52 
2-42 
Mar. 14 
Mar. 16—21, 
5 
-27-5 
26- 1 
- 80 
-0-31 
2-21 
Mar. 1 5 
Mar. 16—21, 
5 
-290 
28-1 
+ 4-8 
+ 0-17 
1-73 
Mar. 22 
Mar. 16—21, 24—28 
9 
+ 79-1 
62-4 
+ 52-0 
+ 0-83 
1-07 
Mar. 23 
Mar. 16—21, 24—28 
9 
+ 55-7 
79-5 
+ 23-3 
+ 0-29 
1-71 
Oct, 19 
Oct. 14—18, 20—25 
9 
-41-2 
99-6 
+ 32-8 
+ 0-33 
1-57 
Nov. 25 
Nov. 21—24, 27— Dec. 1 
9 
-84-5 
970 
+ 29-9 
+ 0-31 
1-59 
Dec. 21 
Dec. 16—20, 22—27 
9 
-49-9 
S3-8 
+ 1-4 
+ 0-02 
1-88 
