REACTIONS OF LARV.E TO LIGHT. 



269 



100 



QO 



70 



J BO 



d 

 X3 



d 



o: 



$50 



V 



40 



20 



/O 







400 



500 600 



Wave -/e?ic|f// n u 



FIG. 3. Distribution of energy in the spectrum of the 15 watt Mazda 

 lamp used, operated at 105 volts. 



