112 FLETCHER, COWAN AND ARLITT 



twenty reactions in each test rather than of the total reactions 

 for a certain length of time. No record was made of the time 

 which elapsed before the first pecking reaction in the first test. 

 In all other respects the method for this group was like that 

 for the preceding groups. 



The following table shows the rate of improvement in peck- 

 ing accuracy of each chick tested: 



TABLE 3 



Chicks 1, 2, 3, 4, 6, 10 and 14 Were Normal Chicks. Chicks 20, 21, 23 and 

 25 Were Hole Chicks. Chicks 41, 43, 46, 47, 48, 51 and 54 Were Water 

 Chicks. Chicks 71, 72, 74, 80 and 81 Were Alcohol Chicks 



Day 2 Day 3 



Reaction Reaction 



No. of Chick 12 3 4 12 3 4 



1 14 1 5 



2 6 6 8 



3 10 3 7 



4 2 6 1 11 4 2 14 



6 1 9 4 6 



10 4 1 15 



14 8 1 11 



Average 11/2 8 1/6 12/3 8 2/3 6 11/2 12 1/2 



20 13 1 6 



21 4 4 2 10 



23 7 6 7 



25 1 8 1 10 8 6 6 



Average 12/3 6 1/3 3 9 10 1/2 3 1/2 6 



41 6 3 11 



43 12 4 4 



46 9 3 4 4 



47 7 8 5 



48 8 1 11 



51 1 4 5 10 



54 7 5 5 3 



Average 3 2/5 6 4 1/5 6 2/5 7 1/2 4 1/2 8 



71 3 10 4 3 



72 1 6 13 



74 



80 9 3 8 



81 7 5 2 6 1 2 1 16 



Average 3 2/3 7 2 7 1/3 1/2 5 1/2 2 12 



