SELECTION OF SUBJECTS. 43 



ciation College in Springfield, Massachusetts. The desirability of such 

 a selection is shown by the following facts: 



In the first place, the students in this college are all professing 

 Christians, their admission to the institution being dependent upon 

 high moral character combined with intellectual and physical fitness. 

 The men would thus be clean-lived and with good histories as to 

 excesses of all kinds. The question of tobacco and alcohol would also 

 be eliminated and a good physical condition be assured. The ethical 

 standards are high and the honor system obtains in every phase of the 

 college life. 



Still another reason for selecting students from this college is the 

 unusual interest in physiological problems throughout the college body. 

 This is due in large part to the active interest in and contributions to 

 physiology made by Professors J. H. McCurdy and Elmer Berry, 

 whose personal cooperation and assistance in many details at Spring- 

 field were admittedly great assets in beginning an investigation of this 

 kind. The contributions of both these gentlemen to physical educa- 

 tion are well known. 



It was a source of great regret to us that, owing to the pressing 

 demands of the Young Men's Christian Association under the present 

 war conditions in France, Professor McCurdy left America for that 

 country before our investigation actually began. This was not only a 

 great loss to us in carrying out the investigation, but necessitated a 

 considerable addition to the already burdensome administrative work 

 of Professor Berry, which prevented him from giving so large an amount 

 of time to the research as he otherwise would have done. 



Notwithstanding the fact that the distance from Boston (100 miles) 

 required a large expenditure for transportation of apparatus, samples, 

 and subjects, the wisdom of selecting men from this institution was 

 repeatedly proved and never questioned during the research. At no 

 point were we disappointed in the group of men selected, in their fidelity 

 and interest, or in the general spirit of cooperation and friendliness 

 exhibited by the teaching staff of the college, especially by President 

 Laurence L. Doggett. Our obligations to Professor Elmer Berry are 

 beyond adequate expression. The keen cooperation of Professor A. G. 

 Johnson in a number of the measurements of physical achievement was 

 likewise highly valued. A factor of most vital importance was the 

 assistance of Chef Arthur M. Hall, of the Students' Dining Associa- 

 tion, whose faithfulness and good nature under most trying and per- 

 plexing circumstances made possible a dietary control that we beHeve is 

 rare in the annals of physiological experimenting. 



Although the decision to undertake this investigation was made in 

 the spring of 1917, it was of course impossible to begin the observations 

 until the opening of the academic year in the fall. Throughout the 

 summer much time was given to a further elaboration of the program 

 of the research, to the construction and testing of apparatus, and to 



