58 



Art. 8.— Y. Takaliashi : 



///. Nickel Lines. 



As tlie source of light was the spark between nickel-steel 

 terminals, some nickel lines were photographed on the same 

 plates with iron lines. 



/ 5477*12 is resolved into a triplet. 



ÏA1ÎLE cm. 



/ = 5477-l-2, triple. 



The specitic separation increases with the magnetic field. We 

 must not, however, forget that there is a weak iron line 5476"57, 

 which is expected to appear 0*08 dhuix apart from the nickel line, 

 though only a sharp line is observed in my photogram. In Fig. 

 51, it ma}^ be seen that the separation curve turns towards the 

 point given by King^^ for the above iron line, and the lower 

 portion agrees approximately with Hartmann' s result for the 

 same line. But, as Hartmann"^ used nickel-steel terminals, we 

 cannot say that the line observed by him is not the nickel line. 

 On the other hand the separation given by Graftdijk^-* for tlie 

 nickel line agrees quite well with the mean value by tlie writer. 



1) 1. c. 



2) J. c. 

 3; 1. c. 



