HABIT FORMATION IN THE ALBINO RAT 



35 



Rat 



22 

 24 

 25 

 26 

 30 

 33 

 34 

 36 

 37 

 38 

 39 



TABLE V 



THREE HUNDRED DAY RATS 

 13 males 15 females 



Trials 



29 

 48 

 82 

 42 

 54 

 19 

 27 

 16 

 66 

 26 

 44 

 34 

 35 



Time 



8221.0 

 1943.8 

 1222.06 

 5605.8 

 1862.4 

 8937.2 

 3167.4 

 956.4 

 2899.0 

 2618.4 

 2861.2 

 1706.6 

 4227.2 



Distance 

 (cm.) 



30962.8 

 35558.4 

 72300.4 

 43411.2 

 33017.6 

 33760.0 

 19980.8 

 11731.2 

 55929.6 

 24358.4 

 33068.8 

 28793.6 

 35916.8 



Absolute 

 time 

 (sees.) 



12.7 



9.5 

 14.5 

 13. 

 10. 

 11 

 13. 

 19. 

 10.7 



8.6 

 13.0 



6.5 



6.9 



19 



2 



9 

 12 

 14 

 15 

 16 

 18 

 19 

 20 

 21 

 27 

 28 

 31 

 35 



Totals. . . 

 Averages. 



Average 

 Average for 9 



31609.6 

 56636.4 

 34898.6 

 32563.0 

 26163.2 

 50601.8 

 18227.2 

 42406.4 

 15059.2 

 66342.4 

 26035.2 

 60960.0 

 24652.8 

 56115.2 

 28076.8 



1029137.4 

 36754.9 



34437.6 

 38023.1 



35.2 



5.8 



9.0 



7.4 



21.4 



11.5 



14.3 



6.6 



13.0 



15.5 



8.3 



6.2 



6.2 



8.3 



6.7 



325.4 

 11.6 



11.5 

 11.7 



No connection between number of trials and time or distance 

 was found, and the ratio of total time to total distance did 

 not appear to be constant. (Table V). Thus, the lowest num- 

 ber of trials (14) was made by a rat whose total distance was 

 next to the lowest, but whose time record was higher than that 

 of one rat finishing at sixteen trials and those of two rats finish- 

 ing at thirty-eight trials each. The greatest number of trials 

 (84) was made by a rat whose time record was exceeded by 

 eighteen others, while its distance record was exceeded by four 



