Watson, Color Vision in Monkeys. 



27 



TABLE V. 



H's Reactions to Blue-Yellow. 



A — ^With Stimulus Constant. 



B — Witl^ Stimulus Variable. 



8- 8 



8-10 

 8-12 

 8-13 



8-14 

 8-16 

 8-16 



8-16 



8-17 

 8-17 

 8-18 

 8-18 

 8-19 

 8-20 



100 



100 

 100 

 100 



90 



81 



100 



89 



86 

 86 

 100 

 100 

 100 

 100 



Changes in intensity made in midst of 

 series. 



Changes in intensity made in midst of 



series. 

 Half vertical strip of blue shown. 

 Lower half of blue shown. 



Surface value of colors altered by past- 

 ing tissue paper over glass^ 



*Two of the five errors were made when the sun was overcast. 



