292 



FREDERICK S. BREED 



TABLE 2 

 Circle-Square Reactions 



Chick No. 76. Sex, F. 

 Hatched December 3, 1908 



10 



9 



10 



Control Tests 



1 | Lamp, r, 80; lamp, 1, 100. 

 1 I Lamp, r, 100; lamp, 1, 80. 



Training Tests 



3 I Cir. and Sq. equal in area and brightness. 



1 a u a 



Control Tests 



2 I Sq. vs. equivalent and circumscribed circles. 

 5 I Sq. vs. equivalent and inscribed circles. 



Training Tests 



Sq. vs. equivalent and inscribed circles. 



Control Tests 



I Sq. vs. circumscribed and inscribed circles. 

 Same, lamps exchanged. New Sq. form plate. 

 Same, different order of stimuli. 



After negative results in several experiments on forms, the 

 results obtained with no. 76 are interesting. I believe I 

 was fortunate in the choice of animal for this work. Mv notes 



