22 



GARDNER CHENEY BASSET 



TABLE Ilia— (Continued 



Day 61 Day 62 Day 63 Day 64 Day 65 



Control +B 6.052 7.346 6.857 5.821 5.794 



Control— B 4.908 4.908 4.908 4.908 4.908 



Day 66 Day 67 Day 68 Day 69 Day 70 



Control +B 5.928 5.914 5.528 5.963 5.643 



Control— B 4.908 4.908 4.908 4.908 4.908 



Day 71 Day 72 Day 73 Day 74 Day 75 



Control 4- B 5.692 5.519 5.426 5.603 5.381 



Control— B 4.908 4.908 4.908 4.908 4.908 



Day 76 Day 77 Day 78 Day 79 Day 80 



Control +B 5.550 5.794 5.519 5.457 6.106 



Control— B 4.908 4.908 4.908 4.908 4.908 



Day 81 Day 82 Day 83 Day 84 Day 85 



Control +B 5.746 5.673 5.617 5.608 5.497 



Control— B 4.908 4.908 4.908 4.908 4.908 



Day 86 Day 87 Day 88 Day 89 Day 90 



Control +B 5.794 5.488 5.546 5.479 5.479 



Control— B 4.908 4.908 4.908 4.908 4.908 



Day 91 Day 92 Day 93 Day 94 Day 95 



Control +B 5.723 5.346 5.452 5.612 5.510 



Control— B 4.908 4.908 4.908 4.908 4.908 



Day 96 Day 97 Day 98 Day 99 Day 100 



Control +B •. 5.630 5.470 5.399 5.559 5.626 



Control— B ,. . . 4.908 4.908 4.908 4.908 4.908 



Failed Days Required 



to Learn to Learn 



Control +B 1 35.67 + 



Control— B 16.42 



TABLE Illb 



The Maze 



Average Absolute Retention of +B and — B Normal Control Rats 



Absolute Retention 

 After 60 Days' Rest 



Control +B 72.475 seconds 



Control — B 51 . 083 seconds 



TABLE I lie 



The Maze 



Daily Relearning Averages of +B and — B Normal Control Rats 



Control +B. 

 Control — B . 



Control +B. 

 Control — B . 



Day 1 



36.215 

 23.480 



Day 6 

 8.075 



6.410 



Day 2 



29.230 

 11.767 



Day 7 

 7.200 



5.307 



Day 3 



10.930 

 8.597 



Day 8 

 6.970 



5.223 



Day 4 

 11.180 



5.873 



Day 9 

 6.340 



5.223 



Day 5 



7.990 

 5.587 



Day 10 

 6.240 



5.223 



