PULSE DURING MENTAL AND PHYSICAL WORK. 



223 



The particular phases of the experimental sessions during which 

 "sample" pulse-records were taken varied with the experimental series. 

 In the group of experiments, Series I and I A, pulse-records were taken 

 during the finger-movements and during word-reactions. In all cases, 

 "rest" or no activity records were taken after the subject was in posi- 

 tion, but before the experimental process was begun. In the group of 

 experiments, Series II and HA, pulse-records were taken at rest, i. e., 

 sitting in position, immediately after standing, 60" after standing, 

 immediately after two double genuflections, and 60" thereafter. 



The average length of pulse-cycles under these several conditions at 

 various periods of the experimental session is shown in table 40. 



A summary of the average pulse-differences during the different 

 experimental processes is given in table 41. Unfortunately, in several 

 instances the data are not complete. This is due to a number of 

 circumstances, but chiefly to our estimate of the relative importance 

 of the main experimental measurements. If a session was overcrowded 

 or if the pulse-recording apparatus failed to function, the main meas- 

 urements were taken without the pulse. The consequent gaps in the 

 data seemed to make it inexpedient to compare the effects of the differ- 

 ent doses on the pulse, except in the pulse-rate of rest and of finger- 

 movement, in which cases the records were more numerous. 



TABLE 41. Pulse data during mental and physical activity Differences. 1 

 [Values given in thousandths of a second.] 



'Differences equal periods 1-2, 1-3, 1-4, etc. 



