18 Beappicker—On the Influence of Magnetism on the Rate of a Chronometer. 
Taste II.— Pocket Chronometer (ARNoLD), arranged as in the original; for the 
reason. see below. 
ern. No. of Days. | Temperature.| Intensity. Position Rate. es a Remarks. 
o: of XII. Detached Rate. 
1 11 — — — + 6°0 — — 
2 4 . 49 100 — + 5:0 0:0 — 
3 6 47 117 N. + 6:5 +1:5 Above ball. 
4 3 47 100 —_— +5°8 +0°8 — 
5 6 48 100 — + 5:2 +0°2. — 
6 3 49 94 S. + 6:1 +0°9 N. of ball. 
7 3 49 100 — + 4:7 —0°5 — 
8 5 53 162 5. + 5:0 -0°2 Above ball. 
9 2 56 117 S. +4:0 -1:2 ” 
10 i 51 100 —_— | ae ee! -0°9 = 
“The numbers in column 7 are drawn from comparison with each preceding 
detached rate (not done so in 8, 9, 10), and not from the mean one, as is done 
in the following Tables.” 
‘‘ As this chronometer appeared to be increasing its rate, or rather decreasing 
its losing rate, independent of the action of the iron, . 
it [were] discontinued.” [Remark to 10]. 
. our observations with 
Taste IIIl.—Box Chronometer (Barraup, 749), assumed Mean Detached Rate 
+ 0°°6 gaining. 
Ghronel. No. of Days. | Temperature.| Intensity. HO a Rate. ye tt a Remarks. 
6 3 48 84 S. - 0°9 - 155 E. of ball. 
1 al — 100 — + 0°3 — —_ 
2 4 49 100 = - 0-4 — — 
4 8 48 117 8. |} -0°9 -1°5 Above ball. 
3 7 47 126 8. -0°9 -1°5 8. of ball. 
5 4 50 162 8. -0:2 -0°'8 Above ball. 
‘This chronometer being so little affected by the action of the iron, our 
observations on it were discontinued after the 6th [of April], on which day 
it was returned to town; and by comparison with Greenwich time by Captain 
Lynn, on the 28th of April, its rate was found to have been 1*:0 per day, which 
makes the mean rate, as stated above, + 0:6.” 
