Table YIII. — Residual Effect in Sulphur and Mica. 
112 
PROFESSOR R. THRELFALL AND MR. J. H. D. BREARLEY 
Mica. Temperature 18° to 20° C. 
. • — 
10. 
Remarks. 
Mica heated for 38mins. 
at 98° C. 
Not quite recovered, 
though it had been 
over Po0 5 all night. 
Sulphur. Temperature 18° to 20° C. 
9. 
Percentage 
of charge 
coming out 
after 1 min. 
h H . . . . 
i—H ^H " ■ J i 1 • • • • 
iO r? CO cm 
iO CO CO iO CO I>» 
CM O O O O ‘ O 
V V V V V V 
8. 
Percentage 
of charge 
coming out 
after 30 sec. 
iO O O iO N G) tO 
n n i> n co • 
V 
^ co co co 
iO CO iO V5 CO CO 
CM O O O O O O 
V V V V V V V 
7. 
Residual 
in scale 
divisions 
after 1 min. 
16 
16 
17 
17 
45 
Off scale 
<4 
<1 
<5 
<4 
<3 
<6 
After 4 mins. 
was < 9, or 
less than 
•108 per¬ 
cent. 
G. 
Residual 
in scale 
divisions 
after 30 sec. 
Q 
cm VI MM — O O O o 
rH rH rH rH r —( CO t/3 CO 
34 00 
o 
H C't CC ^ 
WWW l 
5. 
Duration 
of charge. 
.5 - - - 6 .3 - - 
B ~ ~ ~ ~ ~ ~ 
CMCOr-^CMOHrHH r-J 
rH 
~ 6 .p - - 
r h ^ r C; 2 " ^ 
P CC H 
r-l CM r—1 CM i—1 f—1 O r 
r—1 
4. 
Charge in 
scale divisions. 
CO CO CO CO 
CM CM (M CM 
s ....XXX X 
CO " ~ ~ r -*r< 00 CO CO 
rH CO rH r—H 05 
CM CO CO CM 
A 
1600 
1600 
264 x 28 
>318x 28 
>298x28 
>298x28 
99 
1 
3. 
Voltage. 
' 
40 Clarks 
99 
99 
99 
264 volts 
318 
318 
>298 
40 
264 
>318 
>298 
>298 
99 
2. 
Number 
of ex¬ 
periments. 
HHHHrHClCDffi CM 
CO ^ CM SCO ^ CM C 
1. 
Date. 
<M 
C5 
qq .............. 
r—1 
cT i—r ct 
<M CM CM 
^ *> +£ - - 4 J 
pH Ph Ph 
<D <D <D 
co w. in 
(M 
05 
00 
rH 
oT cT i-T of 
rH (M CM CM 
-P ^ *''P -P 
Ph P-, pH P-, 
0) 0 <U O 
xnin uixn 
