66 



and smooth, 

 PI. IV. 



K. TSURUTA. 



ill be seen from the following table and Fig- 9 ; 



§ 41. In the eighth and last place, aluminium. I was induced 

 to test this metal because its thermo-electric effect under tension was 

 found by Prof. Ewing to be opposite to that of most of the other 

 metals he examined, that is to say, he found that the E. M. F. 

 decreases as the load is increased. The following table contains one 

 of my measurements made on a specimen 1 m.m. in diameter and 

 it confirms the above statement. 



§ 42. To resume, I repeat here Prof. Ewing's remark that " So 

 far there is no evidence that the peculiar behaviour of iron, , is 



