Prof. E. Wartraann's third Memoir on Jnduciio?i, 263 



This apparatus easily raises 312 kil. : it was set in action with 

 a Bunsen's battery of from twenty to forty pairs. Moreover, 

 its energy was augmented, according to circumstances, by lay- 

 ing on the poles the great helix (3), the three wires of which 

 wei'e connected by their ends, or a tube of soft iron containing 

 the transparent media to be induced ; sometimes even the enve- 

 lope of iron with the diaphanous body were placed in the hol- 

 low of the helix. 



87. Whatever may have been the degree of polarization of 

 the luminous bundles and the intensity of the magnetic forces 

 developed, f/ie rays of the spectnun produced by the rays of 

 the sun or from an artificial source presented no appreciable 

 change. Their number and their distance, varying with the 

 nature of the light and with that of the prisms, were not mo- 

 dified by the new molecular arrangement produced by induc- 

 tion. 



§ IX. Has statical or dijnamical induction any injiuence on 

 chemical affnities ? 



88. Chemical affinities are intimately connected with the 

 electric forces. The problem of their reciprocal dependence 

 has not yet been solved, because this problem has not been 

 regarded in all its bearings. Admitting, with most physicists, 

 that the magnetic influence is felt in imponderable fluids in a 

 mediate manner, by a disturbance or by a new and forced 

 equilibrium in the constitution of the medium traversed by 

 these fluids, it becomes highly interesting to examine whether 

 this disturbance interferes with the forces of affinity, whether 

 it can increase or diminish them. The following experiments 

 were directed to this object. 



89. Between the arms of the electro-magnet (86) was ar- 

 ranged a voltameter with lamina of platina, in which some 

 acidulated water was electrolysed. The voltaic current could, 

 at will and by a very simple arrangement, thus bring the mag- 

 net into action and develope a north or south pole at either of 

 its extremities. The product of decomposition in a given time 

 was estimated by the hydrogen always collected on the same 

 electrode. Now, whatever the direction and intensity of the 

 magnetism engendered, as well as the position of the volta- 

 meter within or without the polar arms, the volume of the 

 gas remained the same*. 



90. The same was the case also when the electro-magnet 

 was replaced by the large helix (3), in the hollow of which 

 the voltameter was placed. 



• I liave been informed by Prof. Grove tliat similar cxporiments, still 

 unpublibiiud, liud led iiiin to the same result. (October 1, 184(j.) 



