124 Mr. Barlow on the anomalous magnetic action 
TABLE, 
Showing the effect of iron on the compass needle at different degrees of heat. 
N<* 
Description of 
bar. 
Height or 
depth of centre 
of bar from 
compass. 
Distance 
of bar 
from 
compass 
Position of 
compass. 
Effect Cold. 
Effect 
White 
Heat. 
Effect Red 
Heat. 
I 
C.B. No. 1. 
Inch. 
0.0 
Inch. 
6.0 
S. 80 w. 
0 / 
+ 00 
O / 
O O 
O 
1 7 
# 
O 
2 
M. B. No. 2. 
4.5 below. 
6.0 
ditto. 
+ 3 ° 0 
ditto. 
0 
0 
3 
C. B. No. 2. 
4.5 below. 
6.0 
ditto. 
+ 18 0 
ditto. 
0 
0 
4 
M.B.No. 1. 
ditto. 
6.0 
ditto. 
+ 29 30 
ditto. 
— 
12 
0 
5 
ditto. 
13 below. 
6.0 
ditto. 
Not obs. 
ditto. 
0 
0 
6 
ditto. 
4.5 below. 
6.0 
N. 80 W. 
ditto. 
ditto. 
— 
12 
30 
7 
ditto. 
4.5 above. 
6.0 
S. 80 W. 
ditto. 
ditto. 
12 
3 ° 
8 
ditto. 
ditto. 
6.0 
ditto. 
ditto. 
ditto. 
0 
0 
9 
ditto. 
ditto. 
6.0 
ditto. 
ditto. 
ditto. 
— 
19 
0 
10 
ditto. 
1 .0 above. 
6.0 
ditto. 
ditto. 
ditto. 
_ 
15 
0 
1 1 
M.B. No. 2. 
12.5 below. 
8.5 
N. 80 W. 
+ 29 30 
ditto. 
0 
0 
12 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ 30 0 
ditto. 
0 
0 
13 
C. B. No. 1 
12.5 below. 
8.5 
N. go V/. 
-f 16 0 
ditto. 
0 
0 
14 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ *5 3 ° 
ditto. 
0 
0 
15 
M.B. No. 2. 
9.0 below. 
8.5 
N. 80 W. 
+ 28 30 
ditto. 
— 
t 
0 
j6 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ 29 30 
ditto. 
— 
1 
3 ° 
>7 
C.B. No. 1. 
9.0 below. 
8.5 
N. 80 W. 
+ ‘5 45 
ditto. 
1 
3 ° 
18 
ditto. 
ditto. 
8.5 
N. 80 E. 
-f 16 0 
ditto. 
__ 
1 
30 
19 
M. B. No. 2. 
6.0 below. 
8.5 
N. 80 W. 
+ 25 0 
ditto. 
— 
3 
0 
20 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ 26 0 
ditto. 
— 
3 
30 
21 
C. B. No. 1. 
6.0 below. 
8-5 
N. 80 W. 
+ 11 30 
ditto. 

3 
30 
22 
ditto. 
ditto. 
8.5 
N. 80 E. 
+ 13 0 
ditto. 
Not obs. 
23 
M.B.No. 2. 
3.0 below. 
6.0 
S. 80 E. 
+ 80 
ditto. 
— 
2 1 
3 ° 
24 
ditto. 
ditto. 
6.0 
N. 45 W. 
Not obs. 
ditto. 
— 
25 
3 ° 
25 
M.B. No. 1. 
0.0 
6.0 
ditto. 
0 0 
ditto. 
— 
40 
0 
26 
M.B. No. 2. 
1.0 above. 
5-3 
N. 60 W. 
-f 2 0 
ditto. 
— 
4 
30 
27 
M.B. No. 1. 
ditto. 
5-3 
ditto. 
Not obs. 
ditto. 
— 
12 
30 
28 
M.B.No. 2. 
9.0 above. 
6.0 
N. 85 E. 
+47 3 ° 
ditto. 

2 
3 ° 
29 
M. B. No. 1. 
ditto. 
6.0 
ditto. 
+ 47 3 ° 
ditto. 
— 
2 
3 ° 
3 ° 
M. B. No. 2. 
1.0 below. 
5-5 
N. 45 W. 
iNot obs. 
ditto. 
— 
55 
0 
3 1 
M.B.No. 1. 
4.5 above. 
7 -° 
N. 75 E. 
ditto. 
ditto. 
2 
3 ° 
32 
M. B. No. 2. 
1.7 below. 
5-5 
N. 45 W. 
ditto. 
ditto. 
+ 100 
0 
33 
M.B.No. 1. 
1.7 above. 
5-5 
ditto. 
ditto. 
ditto. 
— 
26 
0 
34 
M. B. No. 2. 
1.7 above. 
5-5 
ditto. 
ditto. 
ditto. 
+ 
3 ° 
0 
35 
M.B.No. 1. 
4.5 above. 
6.0 
N. 55 E. 
ditto. 
ditto. 
— 
5 
3 ° 
36 
M. B. No. 2. 
ditto. 
6.0 
ditto. 
ditto. 
ditto. 
— 
0 
0 
37 
M.B.No. 1 
0.0 
4-7 
West. 
+ 3 3 ° 
ditto. 
— 
5 ° 
c 
3 S 
M. B. No. 2. 
0.0 
4.7 
North. 
0 0 
ditto. 
0 
0 
Effect Blood 
red Heat. 
0 / 
o o 
+ 4? o 
+ 49 ° 
+44 o 
+ 52 o 
+ 7° o 
+ 3° o 
+ 25 o 
+ 30 o 
+ 40 
+ 37 3° 
+41 o 
+ 42 3° 
+ 47 3° 
+ 39 3° 
+42 ° 
+45 0 
49 0 
+ 3 2 30 
+ 33 o 
+ 36 30 
+ 3 6 3° 
+ 25 30 
o o 
+ 5 3 ° 
+ 5 3 ° 
+ 60 o 
+60 o 
+ 5 45 
+ 33 3 ° 
+ 13 3 ° 
+ «3 3 ° 
+ '3 
+ 35 
+ 35 3 ° 
+ 80 
30 
3 ° 
South end drawn to the bar at red heat. 
f This bar being left standing, it attracted' 
l the same three days after. 
The needle suspected to touch the box. 
1 Observed at the same time with two com- 
/ passes. 
REMARKS. 
Ditto. 
Ditto. 
Ditto. 
Ditto. 
Ditto. 
Ditto. 
North end drawn to the bar at red heat. 
Both attractions very gradual. 
f Passed suddenly to 12^°, but returned 
\ immediately. 
Attractions gradual. 
Ditto. 
Negative attraction rather sudden. 
Motion of needle very slow. 
too 0 very sudden, returned immediately. 
Both attractions gradual. 
The same as No. 32 ; both anomalous. 
Attractions very gradual. 
Motion regular, but quick. 
No motion in the needle. 
