(117) 
its original position and delivers its energy, which once more is 
partially transformed into electric currents. The amount of 2 id7 
in returning must be equal to = id7’ in the original displacement. 
This was easily controlled experimentally. 
The experiments which we have made with a sensitive high- 
resistance ‘THOMSON-galvanometer, used as ballistic galvanometer, and 
kindly lent by Prof. KAMERLINGH ONNEs, perfectly confirmed the 
statements given above. 
The theoretical conclusions, that the value of the integral current 
increases directly as the P. D. used and that it remains unchanged 
with variation of the resistance of the circuit we could not rigo- 
rously prove by experiment because the time of oscillation of the 
galvanometerneedle was too small. The duration of a displacement 
of the meniscus, was with some of the capillary electrometers a con- 
siderable part of the oscillation time of the galvanometer !). 
Yet the results of the galvanometer experiments are far from 
unsatisfactory as may be proved from the data concerning capillary 
B 102 in the subjoined tables IV and V. 
dee Bib, IVS 
| 
f ‚ Mean deflection | Mean deflection | Mean deflection 
epee nf with suddenly | with suddenly calculated per 
poe. applied P. D. removed P. PD, | 1 millivolt. e,. 
40 - millivolt. 19,5 mm. 10,6 mm. 0,264 mm. 
100 4 28,5 4 28,5 4 0,284 » 
Era, 
Resistanees introduced in the | Mean deflection of the galvano- 
circuit. | meter with applied constant P. D. 
| 
6000 Ohm 35,5 mm. 
0.4 Megohm 34 7 
1 7 | 31,5» 
!) It proved unpracticable to arrange the galvanometer for large period. The damping 
soon became excessive, 
