GEEN 
stant of a normal curve that would have been recorded by a capil- 
lary electrometer if the internal resistance could have been annulled. 
The double calculation of * has been made for two electrometers, 
and the results are united in Table II. 
PAD Ce ee 
ee one : k=" 
a 1 wi u 
ed TEA | calculated from friction 
pe calculated from the normal | in capillary and magnitude 
eats curves and internal of displacement of 
electrometer. | resistance. of capillary meniscus by change of 
electrometer. pressure. 
B. 102 4,59 4,95 
B. 103 2,92 2,78 
The agreement between the values of % in the two columns, 
obtained in so different a manner and which have required inde- 
pendent series of measurements is certainly quite sufficient. 
h 
According to HeERMANN’s theory we must have C = — , hence 
Ww 
faa, 
Let us now consider more closely formula (1) 
and let us see in what manner the resistance in the circuit influences 
the value of C. Already on a former occasion ') the normal curves 
of capillary G 103 were examined, recorded with several resistances, 
purposely inserted in the circuit. 
An increase of the resistance with 0,01 megohm 
gave an increase of Pte oh GA 0,0025 
1 
- An increase of 0,1 megohm increased pe 0,0255 
1 
An inerease of 1 megohm increased B 0,2545 
1) 1. c. Bd. 60. 
