M. Dubois-Rayniond puts the ulti- 

 miite nerve and muscular fil)res in the 

 above bead-like shape. The poles 

 would be, in tlie natural relation in 

 a liegative magnetic state, and the 

 equator in a positive ptate. He holds 

 that each molecule lias in it these 

 two potentialities, instead of dividing 

 these opposing influences into dis- 

 tinct fibres. Each view is practically 

 the same, and explains satisfactorily 

 all the phenomena of animal mag- 

 netism. 



This is a magnetie pile made by 



the juxtaposition of four frogs' thighs. 



This battery will distinctly affect the 



galvanometer, decompose iodide of 



potassium, and display a high degree 



of tension when permeated by natural 



electricity. 



(From the experlmentB of Matteucci of Pisa, 

 and DuboiB-Rayniond.) 



According to Radcliffe we may sup- 

 pose the above a nerve or muscular 

 fibre. The whit(! is negative and the 

 dark positive magnetism. In spasm, 

 convulsions, &c., this natural condi- 

 tion may be reversed, in whole or in 

 sections, and as in electricity attrac- 

 tion or repulsion would be the result, 

 according to the law which operates 

 when plus or minun conditions come 

 in contact. 



By pinching or irritating any way 

 the nerve of the rheoscopic limb (I'l) 

 "induced contractions" will fake 

 place in "6." The influence crosses 

 the isthmus made of cotton-wick be- 

 tween the two limbs, in the same way 

 as electricity would traverse it. 

 (Vide M. Beuquercl " Ann. de Chlni.") 



