362 DR. MEYER WILDERMAN ON THE CHEMICAL STATICS AND DYNAMICS OF 
in the dark is = 1'9 centim. to the left = 37‘4x I0~ fi volt (instead of to the right)- 
The deflections obtained in Nl, 2, 3, at a distance of the arc = 36 (37) centims., are 
after the first, 10-5 millims., 10 5 millims. = average 10A millims. = 20 , 6xl0 _b volt, 
and a distance of 26 (7) centims., 19 and 18 millims. = average 18'5 millims. 
= 36-3 xlO- 5 volt. We find again : 37 2 x 10*5 = 14*4 x 10 3 and 27 2 x 18*5 = 13*5 x 10 3 . 
The resistance of the liquid is, as before, 840 ohms. 
Plate (b) contains 5 Curves .—The Ag plates are in a 0'025 normal AgN0 3 solution. 
The curves are, for this reason, steadier and better defined. It took an hour tor the 
galvanometer to steady quite down, the deflection in the dark becoming only 1 centim. 
to the left = 10-3 x 10 -6 volt. Experimental conditions were the same as in (a). 
Resistance of the liquid in the quartz vessel between the Ag plates was found to be 
146 ohms. The deflections obtained at 27 centims. distance were : 40-5 millims. in 
Nl, 30-5 millims. (corr. 34A millims.) in N2, 32A millims. (corr. 38 millims.) in N3, 
= average 37'3 millims. corr. = 43‘6 x 10 ■' ampere = 38‘4 x 10 volt. I he deflections 
obtained at 37 centims. distance were 23 A millims. in N4, and 21A millims. (no corr. 
required) m N5 = average 22A millims. = 26'3xl0 ampere = 23 2x 10 ^olt. 
We find affain : 37 2 x 22A = 30‘8 x 10 3 and 27" x 37'3 = 27’2 x 10". 
Plate (c) contains 4 Curves. —The Ag plates were now in a 0'25 normal AgN0 3 
solution. The resistance of the solution between the plates in the quartz vessel was 
found to be 16A ohms. The E.M.F. in the dark = 0’9 centim. to the left = 9’0 x 1(T 6 
volt. The carbons in (a), ( b ), (c) were the same, care having been taken to stop the 
arc at once after the curves of each series were taken and the measurement of the 
deflection with the Rubens thermopile made (all other measurements were subse¬ 
quently made). The deflections obtained at a distance of the arc = 2/ centims. are . 
40 millims. in Nl, 38 millims. (corr. 40 millims.) in N2, average 40 millims. = 
46'9 x 10~ 9 ampere = 39'8 x 10~ 6 volt. The deflections obtained at a distance 
37 centims. are: 26 millims. in N3, 21 millims. in N4 (no corr. was required) = 
average 23A millims. = 27A x 10~ 9 ampere - 23*4 x 10" 6 volt. We get again: 
37 2 x 23A = 32-2 x 10 3 and 27 2 x 40 = 29'2 x 10 3 . 
Let us now compare the results of Tables ( a ), (b ), (c), obtained under exactly the 
same conditions, except the concentrations of the AgN0 3 solution. 
The resistance of the Nalder Nl was again measured and found to be 834 4 ohms. 
Thus the resistance in the circuit was in («) 1674‘4 ohms, in ( b ) 980'4 ohms, in (c) 
851-4 ohms. We get the following table :— 
Concentration 
of the AgN0 3 
solution. 
Resist¬ 
ance in 
circuit 
in ohms. 
W. 
Deflection 
obtained at 
the distance of 
light from QV 
= 27 centims. 
D,. 
D, = (a) 
ampere. 
A. 
The E.M.F. 
at 27 centims. 
distance. 
AV.A. 
Deflection 
obtained at 
the distance of 
light from QV 
= 37 centims. 
D //t 
D„ = (a') 
amperes. 
A'. 
1 The E.M.F. 
at 37 centims. 
distance. 
W.A'. 
In¬ 
tensity 
of arc. 
Calibra¬ 
tion of 
Nalder 
N2. 
Calibra¬ 
tion of 
Nalder 
Nl. 
j in (a) : O'0041 n. 
1674-4 
millims. 
18*5 (average) 
21-7 x10-9 
36-3 x 10-6 v . 
millims. 
10*5 (average) 
12-3xl0- 9 
20-6 x 10- 6 v. 
11-2 
17-2 
17-4 
| ill ( b ): 0 025 11. 
980-4 
37-3 ( ) 
43-6X10- 9 
38*4xlO" 6 v. 
22-5 ( ) 
26-3x10-9 
23-2xlO' 6 v. 
11-2 
17-2 
17-4 
J in (c): 0-25 n. 
851 -4 
40-0 ( „ ) 
46 - 9 x IQ -9 
39-8 x IQ’ 6 v. 
23-5( „ ) 
27-6x10-9 
23-4x10-6 v. 
11-2 
17-2 
17-4 
