PROPERTIES OP IRON AT A HIGH TEMPERATURE. 
455 
Table 21. 
Masnetising 
Galvanometer 
Resistance in 
Induction per 
force. 
kick. 
circuit. 
sq. cm. 
0T5 
28 5' 
28-0 
11-26 
87 
?? 
218-0 
214-0 j 
1-26 
75 
0-3 
66-5 
66-0 
11-26 
205 
0-6 
182-0 
565 
167-0 
55 
518 
162-0 
502 
157-0 
488 
1-2 
329-0 
21-26 
1,925 
293-0 
1,714 
2-2 
230-0 1 
227-0 J 
101 26 
6,398 
4-0 
181-01 
179-0 J 
201-26 
10,000 
7-3 
225-0 1 
223-0 J 
55 
12,410 
11-6 
250-0 1 
249-0 J 
55 
13,850 
18-0 
264-0 1 
263-0 J 
14,626 
28-3 
274-0 ' 
274-0 J 
55 
15,180 
46-2 
51 
288-0 1 
286-0 J 
55 
15,900 
From this table it will be observed that the induction for low forces has again 
increased ; that the ring still recollects its state previous to heating. 
The ring was again demagnetised, wuth currents ranging down to 0'0075, and the 
following series of experiments was made : — 
