Magnet on Electric Currents. 2038 
was placed between the poles of an electro-magnet, the disk 
cutting across the lines of force. The two poles of a sensitive 
e effect was reversed when the magnet was reversed. It 
was not reversed by transferring the poles of the: galvanometer 
from one end of the strip to the other. In short, the phenom- 
ena observed were just such as we should expect to see if the 
electric current were pressed, but not moved, toward one side 
of the conductor. 
In regard to the direction of this pressure or tendency as de- 
pendent on the direction of the current in the gold leaf and 
the direction of the lines of magnetic force, the following state- 
ment may be made: 
If we regard an electric current asa single stream flowing 
from the positive to the negative pole, i. e, from the carbon 
pole of the battery through the circuit to the zinc pole, in this 
case the phenomena observed indicate that two currents paral- 
lel, and in the same direction, tend to repel each other. 
t is of course perfectly well known that two conductors, 
bearing currents parallel and in the same direction, are drawn 
toward each other. Whether this fact, taken in connection 
With what has been said above, has any bearing upon the 
question of the absolute direction of the electric current, it is 
Perhaps too early to decide. 
In order to make some rough quantitative experiments, a 
pew plate was prepared consisting of a strip of gold leaf about 
cm. wide and 9 em. long mounted on plate glass. Good con- 
