700 Prof. E. P. Adams and Mr. A. K. Chapman 



Cadmium. — This was cast from O.p. cadmium and turned 

 down to the proper size. The effect was opposite to that in 

 copper. 



H. n. 



7210 121 



H 



n ' 

 595 



Tin and Lead. — The disks were cast from " C.p."" metal. 

 No effect could be detected in either of them, and we can 



conclude that in these metals the value of — is certainly 

 greater than 10,000. n 



Cobalt. — The disk was cnt from a sheet of commercial 

 cobalt. As none could be secured of the same thickness as 

 used in the other cases, this disk was only 0'05 cm. in thick- 

 ness. The effect was opposite in sign to copper. 



H 



H. 



n. 



n 



7570 



44-2 



171-0 



6695 



409 



1640 



5356 



33-2 



Averag 



1610 

 e ... 1650 



The following table shows the relation between the Hall 

 and Corbino effects. In both cases copper has been taken as 

 the standard metal, and the numbers given are the ratios of 

 the effects in the other metals to those in copper. The values 

 for the Hall effect were taken from the table of Moreau and 

 Blanc in the Recueil de Constantes Physiques, published by 

 the French Physical Society (1913). 





Hall Effect. 



Corbino Effect. 



Conner 



- 10 

 + 22-0 



- 0-73 

 -10,700 

 +421-0 



- 0-46 



- 1-27 



- 1-60 



- 9-04 

 + 0-63 

 + 1-06 

 + 4-6 



- 0077 

 + 0-17 



- 1-0 



-h 265 



- 029 

 -1500 

 + 14-8 

 -0075 



- 077 



- 1-8 



- 5-3 

 4- 0-13 

 4- 0-27 

 + 0-98 



< 001 



< 001 



Iron 



Aluminium 



Bismuth (H— 7200) 



Antimony 





Gold 



Silver 



Nickel 



Zinc 



Cadmium 



Cobalt 



Tin 



Lead 





