1908-9.] Vibrational Neutral Points in Magnetised Iron. 19 
Table III. — Decreasing Cyclic Field. Co-directional Oscillations. 
Oscillation Solenoid No. 1. 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
m 
Ph 
cS 
PL . 
to 
Oscillations superposed 
upon 
P3 Ph 
pi u 
a « 
H=+15T 
H= -15T 
o ,rH 
reduced from 
reduced from 
o' 
£5 
H= +20. 
H= -20. 
co 
co 
O 
PH 
O 
£ 
co 
Pi 
O 
• rH 
o 
<l 
Pi 
Pi 
o 
o 
Pi 
o 
■ rH 
H-H 
C3 
o 
co 
O 
pH 
c3 
nd 
Pi 
O 
o 
a? 
m 
- 1 
1 
11 
13 
11 
13 
13 
14 
15 
13 
Hd 
a> 
co 
CO 
O 
co 
PI 
O 
• rH 
o 
<D 
Pi 
PI 
O 
o 
Pi 
o 
» rH 
-P 
a 
o 
CO 
o 
pH 
ci 
nd 
Pi 
o 
o 
cl 
m 
0 
0 
- 15 
-17 
-15 
-13 
-17 
- 12 
-16 
-13 
1 
<L 
- 2*5 
no 
2-5 
- 2*5 
- 2-5 
CD 
m 
cn 
2 
CO 
O 
Ph 
O 
- 1-5 
o 
Ph 
O 
Pi 
0-5 
- 1 
- 3-5 
3 
m 
A 
- 0-5 
2 
m 
- 2 
1 
- 2-5 
o 
ci 
4 
• rH 
o 
2 
o 
• rH 
- 5 
3 5 
1 
Pi 
CD 
5 
>H 
O 
5 
pi 
pi 
- 3 
4 
5 
o 
o 
pi 
o 
6 
o 
• 
2 
Pi 
o 
- 5 
3*5 
8-5 
• rH 
7 
• rH 
o 
4 
c3 
r~H 
- 7 
5-5 
14 
m 
O 
o 
m 
8 
3 
o 
- 7 
5 
19 
9 
?h 
4 
Ph 
oi 
^d 
- 5 
4-5 
23-5 
10 
o 
o 
<L 
m 
3 
Pl 
o 
o 
<L 
- 3 
3 
26-5 
m 
Oscillations regarded as superposed 
upon H= + 15T. 
Average 
readings. 
Summation. 
Summations x 1-54 
= Total change of B. 
- 0-5 
- 0-5 
- 1 
0-5 
0 
0 
13 
13 
20 
15 
28 
43 
13 
41 
63 
13 
54 
83 
15 
69 
107 
13 
82 
127 
15*5 
97-5 
151 
13 
110-5 
171 
- 4 
- 5-5 
- 4 
1-5 
8 
13 
21 
29 
36 
41 
Curve H = 15’l of fig. Yl.b. Curve H = 15T of fig. VI. a. 
