1^8 'Journal of Comparative Neurology and Psychology. 



Angle of deflection with strongest 

 illumination to the left, 



8.5 

 II 

 14 

 15 

 19 

 19 



7-S 



7-S 



9 



9 

 -17-5 

 -13 

 10 

 10 

 II 



I3-S 

 13-5 

 16.5 



13 



16. 5 



IS 



^S 



23 



27 



9 

 10 



-IS 



iS-S 

 iS-S 



18.5 



i-S 



4 

 6 



2-5 



Average difference 



TABLE III. 



Light Intensity 333 i candle meters. 



3.6 degrees. 



Angle of deflection with strongest 

 illumination to the left. 



Angle of 

 strongest 

 the right 



deflection with 

 illumination to 



Difference in angle of 

 deflection 



9-S 



- S-S 

 3 

 I3-S 



Angle of deflection in 142 candle 

 meters of light. Strongest illu- 

 mination to the left. 



•5 



4 



■ i-S 



6.5 



16. s 



Average difference 



TABLE IV. 



Angle of deflection in 380 

 candle meters of light. 

 Strongest illumination to 

 the left. 



4° 



9 



S 

 4 



3-5 

 3 



3 . 1 degrees. 



Difference in angle of 

 deflection 



14-5 

 -20.5 



4 



3 

 2.5 



Average difference 



degrees. 



