458 
DR. J. HOPKINSON ON MAGNETIC AND OTHER PHYSICAL 
Tables 24-26. 
Maatnet- 
isiiig 
force. 
0-065 
0-13 
0-26 
0-52 
1- 04 
2 - 08 
3-74 
6-66 
10-61 
15-18 
20-28 
35-88 
Galvano¬ 
meter 
kick. 
27- 0 
28- 0 
57-5 
57-5 
116-0 
117-5 
234-0 
236-0 
06-5 
55-5 
123-5 
117-5 
116-0 
116-5 
302-0 
276-0 
270-0 
262-0 
261-5 
261-5 
258-5 
257-0 
93-5 
89 5 
87-0 
85-0 
85-5 
83-5 
250-5 
247-0 
234-5 
226-0 
225- 0 
230-0 
168-0 
171-0 
173-0 
169-0 
190-0 
197-0 
194-0 
193-0 
226- 0 
228-0 
227-0 
227-0 
SXtn. and XXIV. 
Resistance 
Indue- 
in 
tion per 
circuit. 
sq. cm. 
1-164 
9 
18 
37 
75 
11-164 
172 
379 
361 
356 
927 
847 
829 
5? 
804 
0 
GO 
?? 
792 
101-16 
2,543 
5? 
2,391 
2,349 
6,922 
?? 
6,394 
59 
6,338 
201-16 
9,346 
5 5 
9,456 
}■■ 
10,728 
12,553 
Table 25, Curve XXV. 
Magnet¬ 
ising 
force. 
0-065 
0-13 
0-26 
0-52 
1- 04 
2 - 08 
3-74 
6-66 
10-82 
15-18 
21-0 
35-36 
Galvano- Resistance Induc¬ 
tion per 
sq. cm. 
meter j in 
kick. circuit. 
)5-0'l 
53-5/ 
26-5 
26-0 
55-0 
53 
106-0 1 
106-0 / 
213-01 
213-0/ 
51-51 
51-5 / 
108-01 
105-0 / 
241-0' 
240-0 
80-01 
78 0/ 
223-01 
226-0 / 
163- 0 
164- 0 
193-0 1 
197-0 / 
226-0 1 
226-0 / 
1-164 
11-164 
101-164 
•201-164 
8 
17 
34 
68 
158 
328 
740 
2,196 
6,227 
9,069 
10,783 
12,498 
Table 26, 
Magnet- Galvano- 
ising I meter 
force. I kick. 
_I _ 
0-065 
0-26 
3-95 
11-44 
16-43 
25-0 
15-0 
111-5 
57-0 
59-5 
57-5 
311-5 
140-5 
144- 0 
145- 0 
136-0 
132-0 
135-0 
134-0 
290-0 
257-0 
254-0 
251- 0 
252- 0 
250-0 
175-0 
173-0 
172-0 
172-0 
Resistance 
in 
circuit. 
1-164 
11-164 
101-16 
201-16 
Induc¬ 
tion per 
sq. cm. 
36 
18 
19 
18 
956 
431 
445 
411 
414 
8,062 
7,145 
7,033 
6,950 
9,622 
9,512 
Hie ring was now thoroiiglily demagnetised and heated till it became non-mag-netic. 
It was then cooled slowly, and the following- observations were made :— 
