THE DISTURBANCE OF ISOMAGNETICS. 163 



Isskiki. 



Magnetic Moment. Temperature. 



whence il/=657.2G{l-.OOOGO(/-10") + .0000087(/-10'y] 



Miyazaki. 



Magnetic Moment. Temperature. 



whence il/'=437.96 il-.000586(f-30")+.0Û00174(^-30")-] 



Deflection Bod : — The rod is of bra.<^s and about 1 metre long-. 

 The accompanyuig figures show the rod in liorizontal and vertical 

 projections, as well as in cross section. V grooves are cut all along 

 the slender parts a h, a' b' of the rod. AVhen the magnet is laid on V, 

 the diagonal of the square cross section of the magnet is on a level 

 with the upper face of the rod. To facilitate the change of position of 



