232 



MARY O. McGINNIS 



Further trials were made with three individuals, using the 

 280 c.p. arc light. These did not show any increase in the num- 

 ber of vibrations per second over the number recorded for the 

 25 c.p. light. However, these individuals died the day after the 



TABLE 1 

 12 c.p. light 



25 c.p. light 



