MR. J. S. TOWNSEND ON MAGNETIZATION OE LIQUIDS. 535 
direction of the current in the secondary circuit. The deflection of the galvanometer 
could thus have been increased by the multiplication method, but in all the experi¬ 
ments which were done the apparatus was found sensitive enough to give k correct 
to the seventh decimal place by the ordinary deflection. 
Fig. 1. 
The great difficulty in the experiment is to ensure the perfect insulation of the 
secondary circuit, since the great electromotive force of the primary at break will 
