370 



PROCEEDINGS OP THE AMERICAN ACADEMY. 



May 12. Plate 4. 



In the next two sets the magnetizing current was read at intervals 

 during the measurement of the transverse effect, and corrections for 

 change of field were made accordingly. A measurement of the resist- 

 ance of the transverse circuit was made before and after each measure- 

 ment of the transverse effect when the weak values of / were used. 



In passing from one set to another the gold was in nearly every case 

 removed from the bath, and remained out many hours. 



May 13. Plate 4. 



