ELECTRICAL PROPERTIES OF PURIFIED SULPHUR. 257 
The following table is sufficient to show the variation of con- 
ductivity during heating :— 
Time. 
hh. am; 
11°32 
11:40 
12:0 
12°6 
12°12 
12°22 
d G2 G9 Co G9 09 09 6 C9 LD BS OD 
OP PB oo 0b te oO = 
MAmawownr- 10 
6°17 
Temperature. 
25°5 
The cell was left to cool slowly. 
The deflections obtained were steady ; at no time were sudden 
variations observed comparable with the jumps observed before 
with sulphur conduction. 
Elongation on reversing through 
galvanometer. 
Elongation on stopping 
the current. 
620 
606 
634 
548 
389 
Reversing as at first 
526 
315 
112 
The table given shows that there was only a small change of 
conductivity upon increase of temperature until the temperature 
R 
