] 2 Fisher — The Effect of Diet on Endurance. 



This tabic shows that all the men excepting E. and M. greatly 

 reduced their nitrogen excretion during the experiment, and that at 

 the close (with the two exceptions noted) the men were on about the 

 same niti'Ogen level as the subjects of Professor Chittenden's exper- 

 iment, namely, near one-tenth of a gram of nitrogen per kilogram of 

 body-weight. 



Through the kindness of Professor Benedict of Wesleyan Univer- 

 sity, nitrogen analyses were made in December, 1906, six months 

 after the close of the experiment, to discover to what extent the men 

 had adhered to their newly acquired diet after the eating club in 

 which it had been practiced was disbanded. The results were B. 

 11.0, Lq. 10.5, Lw. 7.9, M. 9.9, P. 6.8, R. 11.5, T. 11.9, W. 8.9. These 

 show that half of the men had reverted to some extent toward their 

 original diets. The men stale that the reason for this reversion was 

 the difficulty in selecting food differing greatly in kind and amount 

 from that customarilv served at their boarding houses. 



The following table shows that the volume of urine daily excreted 

 was greatly reduced during the experiment : 



TABLE VII. 

 VOLUiME OF URINE DAILY EXCRETED (in cubic centimeters) 



B E Lq Lw M P R T W 



Middle Jan. 1435 1160 1130 1391 SIT^ 700 1287 1792 1177 



First April 630 985 900 1252 629 1025 930 797 



Middle Jime 802 1120 822 785 480 .... 696 970 



From this table we see a striking reduction in the volume of urine 

 excreted, with the same two notable exceptions, E. and M. These 

 two, who reduced their excretions least, were the men who Avere the 

 least assiduous in observing the rules of the experiment. 



A careful examination of the feces was made by Professor L. F. 

 Rettger of the Sheffield Scientific School. A summary of his report 

 follows. In it was included a comparative statement for three sets 

 of specimens of two days each, taken in January, March and June, 

 referred to below as series I, II and III. These included data as to 

 the color, odor, quantity, consistency, approximate determination of 

 the number and predominant kinds of bacteria, putrefactive and 

 fermentative properties, and a true microscopic bacterial examination. 

 In brief, to quote from Dr. Rettger's report and letter : 



' Jan. 23 and Feb. 10. 



