REVERSIBLE AND IRREVERSIBLE SYSTEMS UNDER INFLUENCE OF LIGHT. 393 
Average 
amp&res 
observed 
in 
10-5 
units. 
XI. 
Average 
volts 
observed 
in 
io-« 
units. 
XII. 
Calibration 
Calibration 
Distance 
of 
of 
of 
Nalder Nl, 
Nalder N2, 
light from 
in 
in 
quartz 
centimetres 
centimetres 
vessel, in 
(right 
(right 
centi- 
and left). 
and left). 
metres. 
XIII. 
XIV. 
XV. 
Distance 
of 
light 
from 
I! aliens 
thermo¬ 
pile, 
in 
centi¬ 
metres. 
XVI. 
Intensity 
of light 
measured 
with 
Itubens 
thermopile 
at the 
distance 
given 
by Column 
XVI, in 
millimetres 
(right 
and left). 
XVII. 
Tempe¬ 
rature of 
hath, 
in ° C. 
XVIII. 
Temperature 
of room, 
in ° C. 
XIX. 
Kind of cell. 
XX. 
Kind of 
light used. 
XXI. 
Volts and amperes when 
arc was used. 
Photo¬ 
graphic 
plate 
number. 
XXII. 
0 - l Normal NaCl Solution. 
59 
51'8 
19-2 
16-7 
37 
110 
155 
20 
20 
constant 
total light 
arc: 65 volts, 6 '0 amp&res 
10 
34-6 
30-4 
19-2 
16-7 
50 
110 
155 
20 
20 
constant 
total light 
arc: 65 volts, 6 "0 amp&res 
3-7 
3-3 
19-2 
16-7 
37 
no 
155 
20 
20 
constant 
red screen 
arc: 65 volts, 6 - 0 amp&res 
13-8 
12-1 
19-2 
16-7 
37 
no 
155 
20 
20 , 
constant 
blue screen 
arc: 65 volts, 6 - 0 amp&res 
5-8 
5-1 
19-2 
16-7 
37 
no 
155 
20 
20 
constant 
yellow-green 
arc: 65 volts, 6 '0 amp&res 
screen 
arc: 65 volts, 6 '0 amperes 
72-5 
63-6 
19-2 
16-7 
37 
no 
155 
20 
20 
beginning of 
polarisation* 
total light 
0'1 Normal NaBr Solution. 
49 -2 
43-4 
19-2 
17-0 
116 
no 
61 
ordinary temperature! 
constant 
total light 
acetylene 
11 
86-7 
76-1 
19-1 
17-05 
116 
110 
71 
ordinary temperature 
constant 
total light 
acetylene 
12 
46-8 
41*0 
19-1 
17-05 
116 
110 
39 
ordinary temperature 
constant 
total light 
acetylene 
33-8 
29-6 
19-1 
17-05 
116 
no 
28-5 
ordinary temperature 
constant 
total light 
acetylene 
85'0 
74-7 
19-1 
17-05 
116 
no 
64-6 
ordinary temperature 
constant 
total light 
acetylene 
13 
30 '3 
26-6 
19-1 
17-05 
116 
no 
64 ’6 
ordinary temperature 
constant 
red screen 
acetylene 
63'7 
55'9 
19-1 
17-05 
80 
no 
64 *6 
ordinary temperature 
constant 
red screen 
acetylene 
125-3 to 
110 to 
19-1 
17-05 
57 
no 
64-6 
ordinary temperature 
constant 
red screen 
acetylene 
126-4 
51-6 
111 
45*3 
19-1 
17-05 
80 • 
no 
64-6 
ordinary temperature 
constant 
blue screen 
acetylene 
43-6 
38-3 
19-1 
17-05 
80 
no 
64-6 
ordinary temperature 
constant 
yellow-green 
acetylene 
screen 
- 
- 
19-1 
17 -05 
118 
92 
64 *6 
ordinary temperature 
constant 
total light 
arc: 70 volts, 6 '2 amp&res 
19-1 
17-05 
89 
92 
64 *6 
ordinary temperature 
constant 
total light 
arc: 70 volts, 6 '2 amperes 
— 
— 
19-1 
17 -05 
118 
92 
64-6 
ordinary temperature 
constant 
blue screen 
arc: 70 volts, 6'2 amperes 
- 
— 
19-1 
17-05 
118 
92 
64 *6 
ordinary temperature 
constant 
red screen 
arc: 70 volts, 6 -2 amp&res 
- 
— 
19-1 
17-05 
118 
92 
64 *6 
ordinary temperature 
constant 
yellow-green 
arc: 70 volts, 6 '2 amp&res 
— 
— 
19-1 
17-05 
118 
92 
64 '6 
ordinary temperature 
constant 
colourless 
gelatine 
arc: 70 volts, 6 '2 amp&res 
iu the dark. \ Temperature of bath and of room, 17°'5 C. to 20° C. 
VOL. CCVI.-A. 
3 E 
