128 



E. S. BOGARDUS AND F. G. HENKE 



contact. The two corners were never represented by more 

 than two contacts. A record was kept of all the corners not 

 touched, as well as of those with which the animals actually 

 came into contact. 



Table i shows the average time, the average number of errors, 



TABLE I 



Showing Average Time, Average Number of Errors, Average Number of 



Corners Touched, Average Percentage of Corners Touched 



OF Five Normal White Rats in Learning Maze I 



Average 



time, in 



Number of trial minutes 



1 17.73 



2 4.53 



3 1.85 



4 90 



5 1.32 



6 2.40 



7 98 



8 69 



9 1.65 



10 83 



11 87 



12 60 



13 64 



14 50 



15 66 



16 85 



17 92 



18 39 



19 40 



20 48 



21 : 42 



22 56 



23 46 



24 35 



25 41 



26 42 



27 46 



28 46 



29 27 



30 36 



31 36 



32 31 



33 31 



the average number of corners touched, the average percentage 

 of corners touched, of the five normal rats in learning the maze. 

 Reference to the table reveals the following facts : 



(i) The percentage of corners touched is high at the beginning 



