No. 2.] MENTAL POWERS OF SPIDERS. 407 



Figure 4. 

 Green. Yellow. Red. Blue. 



o 3 23 2 



We then changed the colors, transposing the red and yellow, 

 with this result: — 



Figure 5. 

 Green. Red. Yellow. Blue. 



All the colors were then changed, and the following record 

 obtained : — 



Figure 6. 

 Red. Blue. Green. Yellow. 



15 I 2 I 



The following table gives the facts for all the experiments 

 with all the spiders : — 

 Red 181. 

 Yellow 32. 

 Blue 1 1. 

 Green 13. 



