364 



M. C. Chenevean on the Magnetic Balance 



other ferro-magnetic metals and alloys could be determined. 

 It would doubtless suffice to use an extremely fine wire of 

 the metal, and to employ the method of experiment and the 

 corrections already proposed by P. Curie in a work on the 

 magnetic properties of bodies (loc. cit. p. 5, note 1). 



Pis-. 5. 



Description of the Instrument, Magnetically Damped Form. 

 The arm of the torsion-balance is formed by a rod TT 

 (fig- 5), which carries from one of its two extremities a 

 hook c, from which the glass tube t, which contains the body, 



