Validity of Ergo graph as Measurer of Work Capacity 37 



entirely different, for the right hand showed uniform and rapid 

 gain afterwards. We may be warranted, therefore, in saying 

 that practice effect on the ergograph is not easily lost since some 

 gain is shown after a rest period of twenty days. The gain 

 which is shown after the first two rest periods is undoubtedly due 

 to the fact that inurement was not complete before the rest. 

 After the other rest periods, the gain must find explanation upon 

 some other ground. While it is not equal to the amount of gain 

 which would have been made during the pause, had the exercise 

 been kept up, it is nevertheless a real and permanent gain. Some 

 light will be shed upon this point by a comparison of the amounts 

 of work that were done at morning observations with the amounts 

 of work that were done at the afternoon observations. 



In the following table we have the averages of morning obser- 

 vations compared with the averages for afternoon observations. 

 The table makes this comparison between all the records for the 

 first half of the experiment and all those for the last half: 



TABLE V 



FIRST HAEF OF EXPERIMENT 



SECOND HAEF OF EXPERIMENT 



115 



