Nitrogen in Urine. 



167 



therefore, the nitrogen excretion was over twice that of the night preceding 

 experiment No. 71. The corresponding elimination on the first day of the fast 

 is also twice as great as in experiment No. 71. 



On the day preceding experiment No. 75, S. A. B. excreted 19.495 grams 

 of nitrogen, and the greatest elimination of nitrogen on the first day in his 

 fasts occurred in this experiment. 



Preliminary 



No. 59. Dec. 17-18, 1903: Grams. 



7 p. m. to 7 a. m 6.234 



No. 68. 1 Apr. 25-26, 1904: 



7 a. m. to 1 p. m 4.332 



1 p. m. 7 p. m 5.098 



7 p. m. 11 p. m 3.302 



11 p. m. 7 a. ni 5.720 



Total for 24 hours. .18.452 

 Apr. 26-27, 1904 (2d day, 

 No. 67) : 



7 a. m. to 1 p. m 3.766 



1 p. m. 7 p. m 4.714 



7 p. m. 11 p. m 2.991 



11 p. m. 7 a. m 4.949 



Total for 24 hours. .16.420 

 No. 71. Jan. 6-7, 1905: 



7 p. m. to 11 p. m 702 



11 p. m. 7 a. m 2.508 



No. 73. Jan. 27-28, 1905: 



7 a. m. to 1 p. m 1.845 



lp.m. 7 p. m 3.504 



7 p. m. 11 p. m 2.949 



11 p. m. 7 a. m 4.204 



Total for 24 hours. .12.502 

 1 Experiment No. 68 followed immediately No. 6 



Nitrogen. 



No. 75. Mar. 3-4, 1905: Grams. 



7 a. m. to 7 p. m 11.239 



7 p. m. 11 p. m 2.893 



11 p. m. 7 a. m 5.363 



Total for 24 hours. .19.495 

 No. 77. Apr. 7-8, 1905: 



7 a. m. to 1 p. m. . . . 3.104 



1 p. m. 7 a. m 8.259 



Total for 24 hours. .11.363 

 No. 79. Oct. 12-13, 1905: 



7 p. m. to 11 p. m 1.95 



11 p. m. 8 h 33 m a. m. 2.70 

 No. 80. Oct. 26-27, 1905: 



7 a. m. to 7 a. m 7.78 



No. 81. Nov. 20-21, 1905: 



7 a. m. to 7 a. m 8.61 



No. 82. Nov. 23-24, 1905: 



7 a. m. to 7 a. m 11.20 



No. 83. Dec. 4-5, 1905: 



7 a. m. to 7 a. m 8.719 



No. 85. Dec. 8-9, 1905: 



7 a. m. to 7 a. m 16.597 



No. 89. Jan. 9-10, 1906: 



7 a. m. to 7 a. m 13.684 



7, a rest experiment with food. 



Furthermore, on the day preceding experiment No. 77 the nitrogen elimi- 

 nation was 11.363 grams, while the nitrogen excretion on the first day fell 

 to 8.81 grams. So far, therefore, as the different experiments with the same 

 subject are concerned there would appear to be a relationship existing between 

 the nitrogen elimination of the day preliminary to the fast and the nitrogen 

 secretion of the first day. 



When the series of 2-day fasting experiments for different individuals is 

 considered the relationship is by no means as clear. The largest elimination 

 on the day prior to the fast was that in experiment No. 85, 16.597 grams, 

 and yet the nitrogen elimination on the first day of the fast was nearly 2 grams 

 less than the maximum "first day" excretion which occurred in experiment 

 No. 83. On the other hand, one of the lowest nitrogen excretions during the 

 preliminary days was that on the day preceding the latter experiment. 



