the intensity of magnetic forces y ^c. 
4i 
hie of the positions of the Points of Eqiiilihrium at ivhich a Magnetic Needle was retained at diff er ei\ 
f during the day, hy the joint action of two bar Magnets and of Terrestrial Magnetism, reduced to thei 
positions at the Standard Temperature (60°) of the Magnets. Note. The observations were mad 
n doors. 
May 22. 
« O 
CTJ *73 
- ^ 
e y 
I H w 
Points of 
Equilibrium. 
West. East 
o o 
0.25 8l 
0.00 81 
L 
0.75,82 
O.75I82 
•I .0081 
■0.75 8 1 
•0.50 
81 
0.0080 
0.50 
1.25 
80 
80 
12 
59 
05 
20 
58 
36 
02 
07 
35 
47 
33 
o 
81 
81 
82 
82 
81 
80 
81 
81 
81 
81 
80 
00 
5^ 
22 
48 
22 
40 
34 
45 
31 
1 
8 + 
32 
May 27. 
1 .00 
0.00 
0.90 
1 .50 
2.50 
3.00 
81 
82 
■2.60 82 
1.7s 
1 .00 
0.20 
0.00 
o.co 
81 35 
81 51 
83 2383 
84 0484 
83 45 
49 
29 
56 
32 
52 
82 
83 
82 
81 
81 
80 
81 
80 
55 
b : 
82 
80 
13 81 
80 
55 
23 
48 
24 
35 
37 
07 
01 
02 
56 
05 
45 
23- 
O u. 
3 
o Ji ° 
c S’2 
aj CJ w 
• cxo 
QH S 
o 
+ 1.50 
*41. 00 
-f- 1 .00 
0.00 
-f-o. 20 
+ 0.25 
+0.50 
+0.75 
4-0.50 
1 .00 
4-2.00 
Points of 
Equilibrium. 
West. East 
o 
81 
82 
83 
83 
82 
81 
81 
81 
82 
81 
81 
24. 
O ^ 
V 
c h « 
1> 
w 0-0 
tS e g 
Qh 
28 82 01 
op'82 27 
03'83 28 
55|84 05 
1981 59 
43 80 56 
45,80 47 
28J80 23 
0681 08 
i6|8i 07 
o 
+ 3- 
4-2. 
+ 2. 
Points of 
Equilibrium. 
West. East, 
+ !• 
O. 
-f o. 
— o. 
— o. 
— o. 
4-0. 
00 
33 
25 
25 
00 
10 
80 
20 
o 
81 
/ o 
i88i 
20 
19 80 46 -f I 
28. 
-f o 
— o 
.25 8i 
. 10 
.50 
.CO 
82 
83 
83 
83 
50 82 
20 
—2.30 
81 2581 
1 
I 
1 
2 
3.2582 13 
—3 
2 
I 
1 
.00 
•75 
•25 
.00 
35 
31 
07 
44 
48 
^9 
81 
80 
81 
81 
82 
82 
83 
83 
83 
8i 
17 
4‘ 
00 
70 
25 
82 
83 
84 
83 
81 
*83 
80 
81 
80 
81 
25 
41 
01 
41 
57 
52 
82 
82 
83 
82 
81 
82 
30 80 
338. 
38180 
03S0 
06 
2 
58 
47 
47 
45 
53 
34 
31 
57 
41 
5 +0 
29. 
0.00 
0.40 
1 .00 
82 
4782 
5881 
36 81 
4381 
*3—2.75 
00 — 3.00 
48—2.00 
09—2.30 
38—3.75 
*7—3-30 
45 — 2.00 
30—0.75 
33 
,50 
82 01 
82 2482 20 
82 57 
82 03 
82 53 
85 0685 31 
84 25 
83 26 
82 40 
82 21 
83 47 
82 20 
81 48 
82 21 
81 5281 38 
8i 20|8 i 13 
81 06180 47 
81 1681 16 
25. 
O r 3 
C O 
«j 
£ O. O 
tS E g 
OH 
4-1.75 81 
82 
83 
82 
.67 
o. 10 
1 .00 
— 1 .00 
— 1 . lO 
— 1 . 50 
Points of 
Equilibrium. 
West. 
82 
82 
81 
/ 
*5 
56 
45 
44 
22 
05 
44 
East. 
o 
81 
82 
83 
82 
81 
8i 
81 
39 
26 
26 
03 
50 
26 
*3 
No observation. 
•1 .oo'8i I i'8o 46 
.50181 
-f o. 25I81 
1 oj 8 1 
10 81 
08 
18 
30. 
-0.30 
"1 .30 
-2.00 
81 
82 
83 
37 
20 
1 2 
,25 83 
— 4.00 
84 
4 
•3-5083 
■3-75 82 
4.00 81 
•3-5081 
•3.20|8i 
2.25 8i 
-2.oo!8i 
44 
21 
45 
29 
45 
02 
36 
28 
81 
82 
47 
16 
84 05 
84 29 
84 04 
82 44 
81 
81 
4* 
43 
80 57 
81 20 
81 
81 
07 
23 
26. 
'♦M D 
o E o 
o ra T3 
O i-. o 
fl) W *-» 
w ClO 
OH 8 
4-1°. 00 
4 - 0.2 
-fo. 25 
— 0.50 
582 
10 
50 
50 
50 
50 
-1 .00 
0.0c 
Points of 
Equilibrium. 
West. East. 
o 
81 
83 
85 
83 
83 
82 
81 
81 
80 
80 
58 
1 5 82 
39 
54 
18 
01 
55 
*9 
50 
O 
81 
36 
26 
83 
85 
82 
82 
52 
08 
1581 
81 
81 
80 
49 80 
1 2 
06 
33 
50 
*7 
58 
35 
3*- 
-2.00 
-2.50 
-3.00 
-3-40 
-3-67 
-3-75 
-4.20 
-5.00 
-5.00 
-4 
-3-33 
-3-00 
67 8 
82 
82 
84 
84 
83 
82 
81 
82 
81 
I 
81 
81 
24 
54 
42 
25 
ly 82 
44 
53 
46 
38 
01 
28 
82 
82 
83 
82 
81 
27 82 
82 
81 
81 
81 
*5 
54 
29 
58 
4* 
03 
5* 
23 
04 
47 
32 
3* 
Mean true positions of the Pointi 
^^of Equilibrium. 
Westerly. 
o 
81 
82 
83 
83 
82 
82 
81 
81 
81 
80 
80 
26.2 
20.8 
14. 
46. 
43-6 
04-4 
4* 
683 
883 
15.0 
20.8 
56.2 
58.8 
Easterly. 
o 
81 
82 
South, 
as before. 
82 
81 
28. 40 
19.80 
13-20 
34-20 
02.00 
581 
81 
81 
8i 
80 
22.6 
16.80 
08.0 
14.4 
05.40 
46. 
§ 
14. oE 
14.8 E 
15 .2 E 
02.0 V 
24.0V 
25.6 V 
14.8 V 
01 .0 V 
02. 8 E 
03 .2 E 
01 .6 V 
81 
82 
83 
84 
83 
83 
82 
82 
81 
81 
81 
81 
82 
82 
83 
484 
83 
50.4 
24.0 
28.2 
*3 
55-2 
00.6 
11.2 
08.4 
35-8j8i 
16.8 81 
16.8 
21 .8 
82 
81 
82 
81 
81 
03-4 
30. 8 
39-0 
19.0 
25.4 
18.4 
43«2 
*3-2 
47-6 
24.2 
12.2 
17.6 
15. 6E 
16. oE 
16. oE 
02.4 V 
22.0 V 
28.4V 
22.0 V 
02.4 V 
01.4 V 
02 .4 V 
00.4 V 
00.8 E 
In taking the mean, I reject this observation as evidently irregular. 
CCXXV. 
H 
