20 J. Trowbridge—Molecular Change, ete. 
the axial current 6 to be made permanently. D and D’ repre- 
sent the deflections produced by repeatedly breaking the mag- 
netizing circuit @. 
TABLE II. 
6 # jie 
90 1208 90 90 
90 120 90 90 
90 120 90 90 
90 120 90 90 
It will be seen that the same effects were produced as on pe 
stantaneously making and breaking; there was no increase 0 
iminution noticeable. ‘Table IIT shows the effect of eapidty 
reversing the current # through the iron bar. 
TaBLe ITI. 
é Current in one direction. Current in two directions. 
120 190 
120 180 230 
120 190 240 
120 190 240 + 
In all cases the rapid reversal of the current through the iron 
bar produced a momentary increase of magnetism, which dis 
through an iron bar. Observations were taken at periods of 
three hours after the passage of the current eine the iron. 
The results are embodied in Table IV. 
TABLE IV. 
é Cid 
160 190 160 
150 180 150 
137 167 137 
Allowance having been made for variations in the batteries 
used, it was found that the iron bar maintained the molecular 
state imparted to it by the nea current during the period of 
observation, viz: three hou 
Table V. shows the ect upon a steel bar of the same dimen- 
sions as the soft iron bar previously used. The conditions of 
sam: 
the experiments were the same. 
TABLE V. 
6 Cie 
160 180 160 
160 185 160 
160 180 160 
ae ae 
