45 



No conneotion between number of trials and time or dis- 

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

 did not a^j^ear to be constant. (Table V). Thu3 , tiie loweat num- 

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

 ne>.t to the lowest, but whose time record v.as higher than that 

 of one rat finishing at sixteen trials and those of tvvo rats 

 finishing 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 

 others. The lowest time record as well as the lowest distance 

 record was made by a rat which finished in sixteen trials, the 

 highest time record by one requiring twenty-four trials, whose 

 distance record was an average one. The highest distance record 

 belongs to the rat with next to the highest number of trials 

 whose time is also next to the greatest. 



Group averages were; 



Time 

 Trials Absolute Total Distance Speed 



41 11.6 sec. 743 min. 367.5 m. 8.2 cm. per 



second 



The apex of the trial curve (Pig. 6-A) lies at twenty-eight, 

 although the average is forty-one. The large number of rats 

 finishing after thirty trials however easily accounts for the 

 apparent discrepancy. Two maxima are found in the time curve, 

 (Pig. 6-B), at seveiiteen hundred and twenty-eight hundred re- 

 spectively, but again the general average is raised by the twelve 



