74 Faraday on new Electro-Magnetical Motions, 



the product from sulphuric ether, it is less volatile, and more 

 energetic in its action upon oxygenated bodies than ether. 

 Owing to its easy decomposition, its point of volatilization, and 

 ignorance of its peculiar affinities, it has not yet been separated 

 from its concomitants, and exhibited in a distinct form. 



In the -products from nitric ether, this compound proves to be 

 a triple combination of carbon, hydrogen, and azote, hitherto 

 unknown. Its effects upon metallic oxides appear to be quite 

 analogous to those of the compound produced from sulphuric 

 ether, but it is easily separable from the other products. It 

 forms a fulminating combination with platinum. 



AuT. IX. — On so)ne new Electro-Magnetical Motions, and 

 on the Theory of Magnetism. By M. Faraday, Chemical 

 Assistant in the lioyal Institution. 



In making an experiment the beginning of last week, to 

 ascertain the position of the magnetic needle to the connecting 

 wire of a voltaic apparatus, I was led into a series which 

 appear to me to give some new views of electro-magneti*^ 

 action, and of magnetism altogether ; and to render more dis- 

 tinct and clear those already taken. After the great men who 

 have already experimented on the subject, I should have felt 

 doubtful that any thing I could do could be new or possess an 

 interest, but that the experiments seem to me to reconcile con, 

 siderably the opposite opinions that are entertained on it. I am 

 induced in consequence to publish this account of them, in the 

 hope they will assist in making this important branch of know- 

 ledge more perfect. 



The apparatus used was that invented by Dr. Hare of Phi- 

 ladelphia, and called by him a calorimotor ; it is in fact a 

 single pair of large plates, each having its power heightened by 

 the induction of others. Consequently all the positions and 

 motions of the needles, poles, ^c, are opposite to those pro- 

 duced by an apparatus of several plates ; for, if a current be 

 supposed to exist in the connecting wire of a battery from 



