156 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



SEEIES II. 



The data in the second series, as has already been intimated, were ren- 

 dered very incomplete by reason of illness of the members of the table. 

 The only completed data which are comparable throughout the whole 

 period are those of Nos. 7 and 10 for the preliminary and preservative 

 periods. The preservative period extended from January 28 to Feb- 

 ruary 10, but the data obtained for February 9 and 10 were so abnor- 

 mal as to make it extremely likely that there was some unrecorded loss 

 of excrement. The data for these two days are therefore excluded 

 from the summary, and the preservative period is considered as ending 

 with February 8. By reason of the illness of all the members of this 

 class, there was no after period. 



NITROGEN. 



In the case of No. 7, without going into detail, attention is called 

 to the fact that the percentage of nitrogen eliminated in the fore period 

 is 85.2, while the total percentage eliminated in the three preservative 

 subperiods, extending from January 28 to February 8, is 76.2. In 

 this case the preservative appears to have had the effect of diminishing 

 the percentage of nitrogen excreted. In the case of No. 8 the percent- 

 age of nitrogen eliminated in the fore period is 77.1; in the three pre- 

 servative subperiods, 79.7. In this case the preservative appears to 

 have had the effect of increasing the excretion of nitrogen. In the 

 case of No. 9 the percentage excreted during the fore period is 80.3. 

 During the three preservative subperiods (during the third one of 

 which, however, the subject was very ill) the percentage excreted was 

 88.2. These data are of little value for comparative purposes because 

 of the serious illness of No. 9 during a large part of the experimental 

 period. In the case of No. 10 the percentage excreted during the 

 fore period is 75.6, and for the three preservative subperiods 79.9. 

 These data indicate a stimulating effect of the preservative upon the 

 excretion of nitrogen. They are, however, by reason of the facts 

 already set forth, of little value for comparative purposes. In the case 

 of No. 11 the percentage of nitrogen excreted during the fore period 

 is 75.5, and during the three preservative subperiods 82.6. In this 

 case the administration of the preservative appears to have consider- 

 ably increased the excretion of nitrogen. In the case of No. 12 the 

 percentage of nitrogen excreted during the fore period is 60.6, and 

 during the three preservative subperiods 86.6. These data are very 

 irregular, and, by reason of the illness of the subject, are of little 

 value for comparative purposes. 



The summary for Nos. 7 and 10, who completed the preservative 

 period, shows 80.1 per cent of nitrogen excreted in the fore period, 

 and 78.2 in the preservative period. These data indicate a slight 



