158 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



- SERIES IV. 



NITROGEN. 



The highest percentage of nitrogen eliminated in the fore period is 

 95.2, the lowest is 71.2, and the mean for the 3 men completing the series 

 is 86.6. In the preservative period the highest is S9..3, the lowest is 

 78, and the mean is 83. In the after period the highest percentage 

 eliminated is 91.4, the lowest is 81.7, and the mean is 87.1. These 

 data seem to indicate a marked tendency on the part of the preserva- 

 tive to diminish the percentage of nitrogen eliminated, with a pro- 

 nounced tendency to recover in the after period. 



PHOSPHORIC ACID. 



The highest percentage of phosphoric acid eliminated in the fore 

 period is 59.6, the lowest is 48.3, and the mean for 3 men is 57.9. In 

 the preservative period the highest percentage eliminated is 68.5, the 

 lowest for the full period is 59.4, and the mean is 60.8. In the after 

 period the highest percentage is 65.3, the lowest is 60.2, and the mean 

 is 61.3. The preservative therefore seems to have had but little effect 

 in influencing the elimination of phosphoric acid in the urine, but 

 what effect was produced was in the direction of increasing the 

 elimination. 



V. 



NITROGEN. 



The highest percentage of nitrogen eliminated in the fore period 

 is 101.4, the lowest is 85.4, and the mean for 3 men is 95.3. In the 

 preservative period the highest percentage eliminated is 91.4, the low- 

 est is 82.4, and the mean is 87.6. In the after period the highest per- 

 centage is 91.7, the lowest is 78.1, and the mean is 85.1. These figures 

 show a progressive decrease in the percentage of nitrogen eliminated. 



PHOSPHORIC ACID. 



The highest percentage of phosphoric acid eliminated in the fore 

 period is 88.1, the lowest is 59.8, and the mean for 3 men is 70.2. 

 In the preservative period the highest percentage eliminated is 77.2, 

 the lowest is 57.7, and the mean is 63.9. In the after period the 

 highest percentage is 61.7, the lowest is 54.7, and the mean is 59. 

 These figures indicate that the preservative tends to diminish the per- 

 centage of phosphoric acid eliminated in the urine, and this tendency 

 is continued in the after period. 



GENERAL SUMMARY. 



It is advisable now to bring into one summary the results of all the 

 series. This has been done in Tables LV and LXVL (Appendix.) 



