Pulse-Kate. 



133 



Table 51. Pulse-rate in experiments with food ' Continued. 



Subject and date. 



G. E. B. : 



June 22, 1905. 

 June 23. 1905. 

 June 24, 1905. 



Dura- 

 tion. 



3 hrs. 



4 hrs. 

 4 hrs. 



74 82 



75 S3 

 69 75 



'-< - = C 



O C3 



. ** 



O ^ 



03 ea 



~ 



; - 

 bud 

 C3 *i 



P. 



8 5 

 8 8 

 6 6 



Average 73 SO 



75 



A. W. W. : 



Apr. 2, 1907.. 

 Apr. 6, 1907.. 

 Apr. 25, 1907.. 

 May 2, 1907 2 . 

 Mav 9, 1907 2 . 

 May 25, 1907 2 . 

 May 28, 1907 2 . 



Average 



2 hrs. 

 S hrs. 

 S hrs. 

 S hrs. 

 8 hrs. 

 8 hrs. 

 S hrs. 



60 



62 



60 



3 49 



69 



70 

 72 

 73 



3 51 , 74 

 s 51 ' 70 



3 52 ; 66 



54 71 



L6 



Subject and date. 



W. E. T. : 

 Mar. 30, 1907. 

 Apr. 3, 1907. 

 Apr. 11, 1907. 

 Apr. 16, 1907. 

 Apr. 27, 1907 " 



Dura- 

 tion. 



8 hrs. 

 8 hrs. 

 8 hrs. 

 8 hrs. 

 S hrs. 



Average 



H. B. W. : 



Apr. 9, 1907. 



S hrs. 



62 



4:i 



il : 

 - I 



>.n 



P. 



67 

 65 

 70 



72 

 70 



69 



72 



23 



20 



59 



1 All records subsequent to June 24, 1905, were taken with pneumograph and not by the 

 subject. 



2 By subject and with pneumograph. 



3 By subject. 



It can be proved, therefore, from these observations in experiments with 

 food, that the average pulse-rate may vary on two successive days, even with 

 like conditions of muscular activity and food. It is impossible here to enter 

 more into detail with regard to the kinds of diet given and attempt to explain 

 the variations in the pulse-rate by the differences in the kind of diet, for, as is 

 seen in the experiments without food, there exists a large variation in the pulse- 

 rate from day to day which obviously cannot be explained by any presumable 

 variations in the store of protein, fat, or carbohydrates in the body. It is 

 necessary to consider, therefore, that there is no normal pulse-rate which can 

 be accurately referred to in all cases even with the same individual. 



COMPARISON OF PULSE-RATE IN EXPERIMENTS WITH FOOD AND WITHOUT FOOD. 



While it is not the purpose of this article to discuss the influence of the 

 ingestion of food upon the pulse-rate, it is advisable in this connection to con- 

 sider for a moment the average pulse-rate in experiments with and without 

 food, and on the same subject. Consequently the data have been brought 

 together in table 52. With certain of the subjects no comparison experiments 

 were made, but on 12 subjects we have experiments with and without food. 

 Contrary to the experience found in the report on inanition, mentioned pre- 

 viously, we find here that there is no definite rule for the pulse-rate in experi- 

 ments with food as compared with experiments without food. In certain cases 

 it is higher with food, and in other cases it is higher without food. On the 

 other hand, the range throughout the day is almost always considerably greater 

 in experiments with food than without, although there are one or two notable 

 exceptions to this, particularly in the experiments with H. C. K. and B. P. D. 



