PULSE-RATE. 399 



80 was observed during the early morning experiment of January 8, 

 while the high pulse-rate of 74 was recorded immediately before the 

 work experiment of Professor Johnson on the day preceding 

 (January 7). The records indicate that this man returned to Spring- 

 field before dinner on January 7 and was a subject for the work test 

 near the middle of the afternoon. Professor Johnson's pulse records 

 during the experiment show that Moy's pulse-rate of 74 prior to work 

 was an average of three countings. Following the work the pulse-rate 

 at the end of 8 minutes was 76 and it finally reached a level of 74 at 

 the end of 9 minutes. These later records seem to verify completely 

 the initial high count. The record of 43 for January 8 in table 80 

 indicates that the pulse-rate had fallen to a level below his pulse level 

 prior to the Christmas recess. On January 9 the pulse in the early 

 morning was 60. For several weeks subsequent to this date, pulse- 

 rates averaging 42 beats were obtained, with fair agreement between 

 the two series of records. 



The same subject (Moy) had on November 2 a pulse-rate prior to 

 work of 70 as compared to one of 48 on October 29. Table 80 shows 

 that the pulse-rate of Moy in the early morning of November 2 was 

 only 40. We thus have here again a marked difference between the 

 post-absorptive pulse and the pulse-rate prior to work. With the 

 other men, fluctuations as pronounced as this are rarely observed. 

 Attention should, however, be called to the high value of 78 on De- 

 cember 3 with Tom. Unfortunately on that particular day there is 

 no post-absorptive pulse value for comparison as his respiratory ex- 

 change was not measured that morning; the early morning record for 

 the next day (December 4) was 64. 



For further comparison we give in the last column of table 84 the 

 averages obtained for the post-absorptive pulse-rates in the lying posi- 

 tion which were recorded in the early morning. (See table 80, p. 

 385.) Although, of course, the comparison can only be made for 

 the low-diet period, since no early-morning records were made after 

 February 3, these figures show, as would be expected, that the pulse- 

 rate prior to bicycle riding was in all but two cases higher than in 

 the morning. On January 18 and 21, identical values were found 

 both for the pulse in the early morning and for the pulse prior to work, 

 namely, 49 and 44 on the two days, respectively. The difference 

 between the levels of the two series of values may best be observed 

 from the curves for the average normal pulse-rate prior to work and the 

 average basal pulse-rate in the morning given on the chart in figure 91 

 (p. 411). As indicated by the last two columns of table 84, this 

 difference is usually not far from 3 to 6 beats. 



This intimate comparison of these two series of pulse data supplies 

 a logical argument for the scientific recording of pulse-rates only when 

 the subject is in the post-absorptive condition and after a considerable 



