between the White and Blood-Red Heat. ' S41 
Effect of Iron at different Degrees of Heat m the Compass. 
No. 
of 
Exp. 
Description 
afbar. 25 in. 
ong, 14 in. 
square. 
Height or 
depth of 
centre of bar 
from com- 
pass. 
Dis- 
tance of 
jar from 
com- 
pass. 
Position 
of Com- 
pass. 
Elfect 
Cold. 
Effect 
White 
Heat. 
Effect Red 
Heat, 
Effect 
Blood 
Red Heat, 
•1 
C. B. No. 1. 
Inch. 
0.0 
Inch. 
6.0 
S. 80. W. 
0 / 
+ 00 
5 / 
0 0 
0 i 
17 0 
« 0 
0 0 
2 
M.B. No. 2. 
4.5 below. 
6.0 
ditto. 
+ 30 0 
ditto. 
0 0 
+ 45 0 
3 
L\ B. No. 2. 
4.5 below. 
6.0 
ditto. 
+ 18 0 
ditto. 
0 0 
+ 49 0 
4 
M.B. No. 1. 
ditto. 
6.0 
ditto. 
+ 29 30 
ditto. 
— 
12 0 
+ 44 0 
5 
ditto. 
13 below. 
6.0 
ditto. 
Not obs. 
ditto. 
0 0 
+ 52 0 
6 
ditto. 
4.5 below. 
6.0 
N. 80 W- 
ditto. 
ditto. 
12 30 
+ 70 0 
7 
ditto. 
4.5 above. 
6.0 
S, 80 W. 
ditto. 
ditto. 
— 
12 30 
+ 30 0 
8 
ditto. 
ditto. 
6.0 
ditto. 
ditto. 
ditto. 
0 0 
+ 25 0 
9 
ditto. 
ditto. 
6.0 
ditto. 
ditto. 
ditto. 
— 
19 0 
+ 30 0 
10 
ditto. 
1.0 above. 
6,0 
ditto. 
ditto. 
ditto. 
.ii.- 
15 0 
+ 4 0 
11 
M.B. No. 2. 
12.5 below. 
8.5 
N. 80 W. 
+ 29 30 
ditto. 
0 0 
+ 37 30 
12 
ditto 
ditto. 
8.5 
N. 80 E. 
+ 30 0 
ditto. 
0 0 
+- 41 0 
13 
C. B. No. 1. 
12.5 below. 
8.5 
N, 80 W. 
+ 16 0 
ditto. 
0 0 
+ 42 30 
14 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ 15 30 
ditto. 
0 0 
+ 47 30 
15 
M.B. No. 2. 
9.0 below. 
8.5 
N. 80 W. 
+ 28 30 
ditto. 
1 0 
+ 39 30 
16 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ 29 30 
ditto. 
... 
1 30 
+ 42 0 
17 
C. B. No. 1. 
9.0 below. 
8.5 
N. 80 W. 
+ .15 45 
ditto. 
... 
1 30 
+ 45 0 
18 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ 16 0 
ditto. 
1 30 
49 0 
19 
M.B. No. 2. 
6.0 below. 
8.5 
N. 80 W. 
+ 25 0 
ditto. 
— 
3 0 
+ 32 30 
20 
dittp. 
ditto. , 
8.5 
N. 80 E. 
+ 26 0 
ditto. 
•T!-. 
3 30 
+ 33 0 
21 
C. B. No. 1. 
6.0 below. 
8.5 
N. 80 W. 
+ 11 30 
ditto, 
— 
3 30 
+ 36 30 
22 
ditto. 
ditto. 
8.5 
N. 80 E, 
+ 13 0 
ditto. 
Not obs. 
+ 36 80 
23 
M.B. No. 2. 
3.0 below. 
6.0 
N. 80 E, 
+ 80 
ditto. 
_ 
21 30 
Not obs. 
24 
ditto. 
ditto. 
6.0 
N. 45 W, 
Not obs. 
ditto. 
— 
25 30 
+ 25 30 
25 
M.B. No. 1, 
0.0 
6.0 
ditto. 
0 0 
ditto. 
_ 
40 0 
0 0 
26 
M.B. No. 2. 
1.0 above. 
5.3 
N. 60 W. 
+ 20 
ditto. 
_ 
4 30 
+ 5 30 
27 
M.B. No. 1. 
ditto. 
5.3 
ditto. 
Not obs. 
ditto. 

12 30 
+ 5 30 
28. 
M.B. No. 2. 
9.0 above. 
6.0 
N. 85 E. 
+ 47 30 
ditto. 

2 30 
+ 60 0 
29 
M.B. No. 1. 
ditto. 
6.0 
ditto. 
+ 47 30 
ditto. 
— 
2 30 
+ 60 0 
30 
M.B. No, 2, 
1.0 below. 
5.5 
N. 45 W. 
Not obs. 
ditto. 
55 0 
+■ 5 45 
31 
M.B. No. l. 
4.5 above. 
7.0 
N. 75 E. 
ditto. 
ditto. 
... 
2 30 
+ 33 30 
32 
M.B. No, 2 
1.7 below. 
5.5 
N. 45 W. 
ditto. 
ditto. 
+ 100 ■ 0 
+ 13 30 
33 
M.B. No. 1. 
1.7 above. 
5.5 
ditto. 
ditto. 
ditto. 
— 
26 0 
+ 13 30 
34 
M.B. No, 2. 
1.7 above, 
. 5.5 
. ditto. 
ditto. 
ditto. 
+ 
30 0 
+ 13 30 
35 
M,B. No. 1. 
4.5 above. 
6.0 
N. 55 E. 
ditto. 
ditto. 
5 30 
+ 35 30 
36 
M.B. No. 2. 
ditto. 
6.0 
ditto. 
ditto. 
ditto. 
0 0 
+ 35 30 
37 
M.B. No. 1. 
0.0 
4.7 
■West, 
+ 3 30 
ditto. 
.i.. 
50 0 
+ 80 
38 
M.B. No. 2. 
0.0 
4.7 
North. 
0 0 
ditto. 
0 0 
0 0 
• No; 1. South end drawn to the bar at red heat. 
No. 6. Thfe bar being leff stapling, it attracted the same three days after. 
No. 8. The needle suspected to touch the box. 
Nos. 11. to 24 Observed at the same time with two compasses. 
No. 25. N. end drawn to the bar at red heat. No, 26. Attractions very gradual. 
No. 27. Passed suddenly to 12 blit returned immediately. 
. Nos. 28. and 29. Attractions gradual. 
No. 30, Negative attraction rather sudden. No. 31. Motion of needle very slow. 
No. 32. 100° very sudden, returned immediately. No. 33. Both attractions gradual. 
No. 34 The same as No. 32 ; both anomalous. No. 35, Attractions very gradual. 
No. 37. Motion regular, but quick. No. 38. No motion in the needle. 
