DISCRIMINATIVE ABILITY OF THE TURTLE 



13 



TABLE 1 



Turtle No. 1, Black and White 



Discrimination 



Fed in white box 



Test. Right Wrong 



1 8 2 



2 2 3 



3 10 



4 2 



5 7 3 



6 10 



7 9 1 



8 9 1 



9 8 



10 9 1 



11 8 2 



12 9 1 



13 8 2 



14 10 



15 10 



16 8 2 



17 10 



18 10 



19 9 1 



156 



19 



TABLE 2 



Turtle No. 11, Black and White 

 Discrimination 



Fed in black box 



Test 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



Memory tests: After 12 weeks, 8 

 light, 2 wrong; after 21 weeks, the 

 ^.ame. 



Memory test after 6 weeks, 10 right, 

 wrong. 



TABLE 3 



Turtle No. 8, Black and White 

 Discrimination 



Result of preference trials. Block 34, 

 ivhite 16. Fed in white box 



Test Right Wrong 



1. 4 6 



2 3 7 



3 4 6 



4 8 2 



5 7 3 



6 7 3 



7 5 5 



8 10 



9 10 



10 8 2 



11 9 1 



12 10 



13 ;.. 10 



14 10 



105 



35 



TABLE 4 



Turtle No. 9, Black and White 

 Discrimination 



Result of preference trials: Black 16, 

 white 4. Fed in white box 



Test Right Wrong 



1 3 7 



2 2 8 



3 3 7 



4 4 6 



5 8 2 



6 6 4 



7 8 2 



8 5 5 



9 7 3 



10 9 1 



11 10 



12 10 



13 8 2 



14 8 2 



15 10 



16 10 



17 10 



121 



49 



