MAGNET!CAL OBSERVATIONS IN IRELAND. 
127 
Table I .— [Continued.) 
Place. 
Date. 
Hour. 
Time. 
Arc. 
Rate. 
Temp. 
Corr.Time. 
h m 
// 
o 
// 
O 
// 
London . 
Oct. 23. 
1 18 
235*09 
3-0 
+7-8 
52-4 
235-52 
24. 
11 45 
23505 
30 
a 4 a 
54-5 
235-35 
2 23 
235-12 
3-5 
a a a 
55-0 
235-39 
Mean 
235-09 
• • • 
• • a 
540 
235-42 
Dublin. 
Nov. 5. 
1 46 
243-18 
30 
• • • 
54-2 
243-51 
6 . 
12 21 
243-35 
3-0 
• • • 
48-0 
244-06 
1 55 
243-37 
3-5 
III 
48-7 
244-04 
Mean 
243-30 
« • • 
• • • 
50-3 
243-87 
Limerick. 
Dec. 19. 
11 40 
243-03 
a • • 
4-4-0 
45-5 
243-90 
21 . 
12 19 
242-36 
it* 
a a a 
360 
243-81 
23. 
11 17 
242-68 
• • • 
• t 0 
330 
244-32 
Mean 
242-69 
• • • 
• • 
38-2 
244-01 
Dublin. 
Dec. 29. 
1 31 
243-22 
4-0 
+ 5-5 
47‘6 
243-96 
1 52 
243-18 
4-0 
a a a 
47*0 
243-95 
Mean 
243-20 
• • • 
• a a 
47*3 
243-95 
Dublin . 
Jan. 11. 
11 21 
242-67 
3-0 
a • • 
33-8 
244-24 
11 44 
242-48 
4-0 
a a • 
340 
244-03 
12 . 
10 12 
242-86 
2-0 
• a a 
33-8 
244-43 
Mean 
242-67 
i - 
• a a 
33-9 
244-23 
Time of Vibration of Cylinder L (b) 
Placef. 
Date. 
Hour. 
Time. 
Arc. 
Rate. 
Temp. 
Corr. Time. 
h m 
// 
/J 
O 
// 
Limerick. 
Sept. 9. 
2 14 
292-55 
a • a 
0-0 
60-2 
292*54 
Ballybunan ... 
17. 
10 3 
292-25 
• • • 
• a a 
62-0 
292-10 
Glengariff ... 
27. 
12 24 
293-15 
» • • 
a a a 
68-0 
292-57 
Killarney. 
Oct. 4. 
12 38 
292-15 
® a a 
a a a 
68-0 
291-57 
Limerick. 
8. 
1 38 
292-51 
4-0 
+ 15- 
62-0 
292-31 
2 5 
292*92 
40 
a a a 
62-0 
292-72 
Mean 
292-72 
9 a a 
a a a 
620 
292-52 
Dublin . 
Oct. 11. 
1 34 
292-82 
1.5 
+ 1-0 
62-5 
292-63 
2 50 
292-73 
2-5 
a a a 
58-5 
292-84 
Mean 
292-78 
a a a 
a a a 
60-5 
292-74 
Carlingford ... 
13. 
1 45 
294-65 
30 
a a a 
59-5 
294-69 
Armagh . 
14. 
1 55 
295-89 
2-5 
a a a 
51-0 
296-56 
15. 
1 45 
295-70 
3-0 
a a a 
52-5 
296-25 
Mean 
295-80 
• a • 
a a a 
51-8 
296-40 
* First six observations, and those of 21st and 23rd of December 1835, 
made by Captain Sabine. All the others with this needle by Mr. Lloyd, 
f Carlingford, open field east of town. 
