186 



WEBER ON THE CONNEXION OF DIAMAGNETISM 



description is however unnecessary, as the difference exercises 

 no particular influence. 



Experiments with Bismuth, 



T., f 1 Position of bis- 

 ^,?\?* muth during the 

 oscillation. oscillation. 



ment or end ot each 

 oscillation. 



Position of needle i . „r _:ii^ i 



at the commence- I ^!f.?\?f ?}."*- i Reduced arc 



5000 

 4670 

 513-9 

 459-9 

 518-5 

 4600 

 5120 

 471-1 

 489-7 

 494-2 

 4809 

 498-9 

 457-0 

 5160 

 459-3 

 504-4 

 478-3 

 476-9 

 504-9 

 459-6 

 499-4 

 460-1 

 513-9 

 464-2 

 5062 

 446-9 

 498-0 

 460-0 

 453-1 

 479-8 

 446-9 

 494-6 

 450-4 

 490-5 

 442-6 



tion of the 

 needle. 



of oscillation. 



Mean value. 



61-8 



-59-8 



561 



55-8 



In the third cohimn of this table the positions of the needle 

 observed at the beginning and end of each oscillation are noted ; 

 in the fourth column the corresponding arcs of oscillation (the 

 mean of every two successive ones). A positive sign before the 

 arc of oscillation denotes that when the position of the bismuth 

 was above, the needle proceeded from smaller to larger numbers, 

 or when the bismuth was below, from larger to smaller numbers ; 

 the reverse applies to the negative sign. After the position of 



