187 
Current. 
verti ng 
Ki 
by Cathode and Canal Rays to 


Value of ratio 





Pressure - Potential : 
in in ones sears 
current 
mm. volts. Wattage 
0-10 700 5d —5'7 
fe 800 6:9—7 
mee 900 “4 
0:07 1000 7'8—8 
aie 1200 8:°7-—9'1 
ogedae 1400 9:5—96 
wee A 1800 axe 
0:06 2000 12 —125 
sage 2000-- 2400 Sa aente 
0:05 2200 12°7—12'8 
0:048 2400 13°1 
0:04 2600 13°1—13°2 
0:085 2800 13°3—138'°7 
0-0: 8000 —3400 13-4—14°6 
Fak 3600 guseens 
ae 4000 14°3—-15°3 
0:02 5000 144 
0-01 6000 16 --16°3 
ies 7000 159—168 
7000—7500 

Cathode rays in rarefied air. 
, by 
TABLE I. 
Value of ratio 
100 > cathode rays 
current 
Method IT. 


9°63 
11 —11°5 
119-126 
12°5—13'1 
12°7—12'9 
13'9—145 
15°6—15'7 
16°4-—16°6 
17°14 
18:2—18'5 
, by 
First kind of net-electrodes. 

Value of ratio ses 

current 
corrected for 
absorption by net, 
Method I. 
1534—16'1 
183 —19°7 
20 
21-8226 
24-5255 
26:6--27 
33°6 —35 
35°7 —36 
36:6 
36:8—37 
37°3—38'4 
37-6—40°8 
40:1—42'8 
43:3 
44:8—45°7 
44-5—47'1 



Values by 
Method II. 
corrected for 
absorption by net. 
269 
30°8— 32 
30'4—35'3 
oD) —an'r 
36 —36'5 
39 —40°5 
42:2-—43'9 
45°'8—46'6 
47'9 
50:9—51°8 

