618 Mr. J. Viriamu Jones [May 24, 



July 10th, morning. — Standard coil readjusted. One-minute tapes. 



0-999734 

 0-999818 

 0-999726 



Mean .. .. 0-999759 



July 10th, afternoon. — No readjustment of standard coil. Three- 

 minute tapes. 



0-999708 

 0-999742 

 0-999764 



Meau 0-999738 



July 11th, afternoon. — Standard coil readjusted. Three-minute 

 tapes. 



0-999693 

 0-999692 

 0-999679 



Mean 0-999688 



July 12, morning. — No readjustment of standard coil. Resistance 

 coils reversed. 



0-999713 

 0-999711 

 0-999692 



Mean 0-99970.5 



July 12th, afternoon. — Standard coil readjusted. Resistance 

 coils removed from the mercury cups and replaced. Three-minute 

 tapes. 



0-999774 



0-999787 



0-999759 



Mean 0-999773 



July 13th. — Standard coil readjusted. Resistance coils removed 

 from mercury cups and replaced. Three-minute tapes. 



0-999847 

 0-999809 

 0-999782 

 0-999842 (morning of the 14th) 



Mean 0-999820 



July 14th, morning. — Standard coil readjusted. Resistance coils 

 removed and replaced. Three-minute tapes. 



0-999695 

 0-999692 

 0-999717 



Mean 0*999701 



