56 L. W. SACKETT 



the woods only a few weeks and had had no experience except 

 in a few preHminary hand reactions in connection with the 

 taming process. No. 3 was also mature while No. 10 was not 

 half grown. It is not certain how much either of these factors 

 affected the results but one would expect that the experience 

 and steadiness of No. 3, contrasted with the constitutional 

 wildness and inexperience of No. 10 would be sufficient to 

 account for some of the difference in the two tables or records. 

 Stimuli were used pair- wise for the reason that the porcupine's 

 peculiar manner of search as explained in the form tests make 

 six-wise stimuli confusing, if they are presented as new problems. 



TABLE X 



Color and Brightness Reactions. Porcupine No. 10 



Blue-Green 15, 8, 11, 7, 9, 12, 16, 8, 15, 7, 12, 12, 9, 9, 13, 9, 11, 14, 



11, 10 (failure). 



Grays 1-50 11,11, H, H, 13, 12, 12, 14, 14, 16, 14, 14, 20, 20. 



" 11-50 17,17,16,18,14,14,17,20. 



" 21-50 16,16,18,18,18,17,15,14,14,18. 



" 32-50 15, 17, 17, 20. 



" 41-50 15, 13, 14, 20. 



" 41-50 (New). . 10, 13, 15, 15, 15, 14, 1.5, 14, 15, 13, 12, 15, 15 (failure). 



" 32-50 - 16. 17, 18, 20. 



" 41-50 18, 12, 20. 



" 45-50 1.3, 10, 10, 12, 15, 16, 15, 12, 15, 20. 



" 45-50 (New). . 13, 14, 16, 15, 12, 12, 16, 15, 16, 10, 10, 8, 9 (failure). 



" 41-50 18,20. 



" 45-50 11, 15, 17, 12, 13 (failure). 



1-50 20. 



1-41 20. 



1-.32 20. 



1-21 17,20. 



1-11 14, 15, 15, 17, 16, 20. 



1-11 (New).. 18, 20. 



" 11-41 15,20. 



" 21-32 10, 10, 14, 16, 15, 15, 16, 14, 10, 15, 12, 12 (failure). 



Blue-Green 17, 16, 14, 16, 17, 20. 



B^-G, Alt. B,-G2. . . 16, 15, 18, 18. 



Bj-G^ 18. 



B2-G2 Food in light 9, 11, 9. 



Blue-Green 12, 17. 



B^-GjAlt. B2-G2... 17. 



B2-G2 Food in light 7. 



In tables IX and X, except where otherwise .stated, food was placed in the darker 

 I) ).K. B^-Gj represents light blue and dark green respectively. In like manner, 

 Il,-G^ represents dark blue and light green. The figures to the right indicate the 

 number of correct choices in series of 20 each. B--G2 Alt. Bj-G'^ indicates that 

 iu those cases the pairs were exchanged after each test. 



The method employed was very similar to that of the form 

 tests, excepting that the experimenter remained seated through- 



