556 Prof. Richardson and Mr. Hulbirt on the 



Tunosten. Positive Ions. 



z. 



H. 



V. 



*• 



e/m. 



•567 



4850 



122 



1 1-S0 



159 



•567 



4850 



194 



•85 



108 



•567 



4850 



194 



•85 



108 



•567 



4850 



307 



•55 



72 



•567 



4850 



307 



•45 



48 



•567 



4850 



122 



•70 



47 



•467 



4650 



200 



1-20 



541 



Aver 



ige values ... c 



/w=155. 



Corrected ... e/m =246. 





m 



/H= 625, 



m/H= 39-3. 



All that we can reasonably conclude from the above 

 numbers is that the positive ions from tungsten are of the 

 same order of magnitude as the other metals investigated so 

 far as their specific charge is concerned. 



Alloys. 

 Experiments were made on brass, nichrome, and steel. 

 These were all found to give only one kind of ion for which 

 the value of e/m was near that for platinum. Although both 

 nichrome and steel contain iron, neither of them was found 

 to give the high values of e/m which were obtained with 

 that metal in the purer state. The numerical values are 

 given in the following tables : — 



Brass. Positive Ions. 



z. 

 •583 



H. 



V. 



A'. 



e/m. 



4850 



305 



1-05 



225 





Values ... e/m=225, Corrected ... e/m=358. 

 m/K= 43, m/K= 27. 







Steel. Positive 



Ions. 







z. 



H. 



V. 



X. 



e/m. 



•567 

 •567 

 •567 



4850 

 4850 

 4850 



41 

 81 

 41 



2-50 



1-85 

 275 



194 

 214 

 239 



Average values ... e/m=2l6, Corrected .. 

 m[3.= 44-7, 



. e/m=343. 

 w/H= 28-1. 



