74 
PROF. H. A. WILSON ON THE ELECTRICAL CONDUCTIVITY AND 
In the experiments of Smithells, Dawson, and the writer* it was found that 
chloroform diminished the current with very small potentials but increased it with 
EE, electrodes. DD, salt solution. QQ, row of quartz tubes. 
larger potentials. The potentials used in the present experiments were large and the 
chloroform increased the current. 
BB, burners. K, commutator. 
FF, flames. Q, quadrant electrometer. 
EEEE, electrodes. CC, battery. 
WWWW, platinum wires. 
It is clear that the current is not a measure of the conductivity, but the ratio of 
the current to the uniform electric intensity away from the negative electrode is 
proportional to the true conductivity of the flame. 
* ‘ Phil. Trans.,’ A, vol. 193, p. 89, 1899, 
