35 



distance record was by a rat finishing in fifty-four trials, 

 while the next to the highest time record we 3 made by one which 

 finished in twenty-two trials. In general, where the trials 



tr 



run very high (65, 54) or very low (14, 16) the distance corres- 

 ponds rather closely, but for the trials lying between these 

 extremes no such correspondence can be traced. The ratio between 

 time and listance in this group is by no means constant. (See 

 Table III. ) The group averages are: 



Time 

 Trials Absolute Total Distance Speed 



31 6.8 sec. 219 min. 260.6 m. 19. 8 cm. per 



sec. 



There are two raaxina in the trial curve for tliis group, 

 (Pig. 4-A), at twenty-two and thirty-seven respectively, and 

 the group average lies midway between the tv^o at thirty -one. 

 The time curve (Pig. 4-B), shows the highest point at 

 six thousand seconds and one almost as high at twelve hundred 

 seconds, while the average niimber of seconds for the group was 

 eleven hxxndred. 



Por the distance curve, (Pig. 4-C ) , there is a clearly 

 marked naxima at twenty-six, which corresponds exactly with the 

 grouj average of twenty-six hundred cm. The average mean var- 

 iations for the group are: 



Trials 31 t '•' 29-;^ Variation 



Time 219 min. ± 105 min 48^^ 



Distance ... ::60. 6 m. t 83.2 m 32;^ " 



