386 Scientific Intelligence. 
SCIENTIFIC INTELLIGENCE. 
I, CHEMISTRY AND PHYSICS. 
1. On the conversion of dynamical into electrical force without the aid 
of permanent magnetism.—The magneto-electric machine of Mr, Wild 
of electricity is made by a series of inductive actions to equal or exceed 
the effects of the most powerful machines of the ordinary construction. 
—Proc. of the Royal Society, xv, 367, 369. Ww. 
transformations y this valuable reagent, the introduction of 
which, it will be remembered, is due to himself. The experiments were 
conducted by ucing the organic matter to be operated on into a 
tube with a very concentrated solution of iodhydric acid, sealing the tube 
and heating to a temperature of 275° ©. In this manner the iodid, bro- 
mid, and chlorid of ethylene yield hydruret of ethylene, haloid acid, and 
on i the case of the iodid being represented by 
free iodine, the reaction in 
