240 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



preservative period, extending from January 28 to February 8, inclu- 

 sive. The mean quantity of solids ingested in the food during this 

 period is 668 grams, as compared with 673 in the fore period. Of this 

 quantity the mean amount recovered in the feces is 34.7 grams, and in 

 the feces and urine 102.262 grams. The mean percentage of solids re- 

 covered in the feces is 5.2 and in the feces and urine 15.3. The mean 

 daily balance is 565.738 grams. The above data show a slight tendency 

 on the part of the preservative to increase the solids in the feces, 

 whereas the quantity of solids appearing in the urine is not changed. 

 This is an indication of the exercise of a slight degree of inhibition on 

 the part of the preservative in the digestion and assimilation of the 

 food. In the second summary of Series 11, namely, a comparison of 

 the data of Nos. 7, 10, and 12, it is found that the mean quantity of 

 solids ingested daily in the food, during the fore period, is 694 grams, 

 of which 30.2 grams are recovered in the feces and 64.092 grams in 

 the urine. The percentage of total solids eliminated in the feces is 

 4.4 and in the feces and urine 13.6. Without discussing the details of 

 the various subperiods it will be sufficient to call attention to the data 

 of the preservative period as a whole, extending from January 28 to 

 February 8, inclusive. During this period the average daily quantity 

 of solids in the food is 627 grams, of which 31.3 grams occur in the 

 feces and 97.471 grams in the feces and urine. The percentage of 

 total solids eliminated in the feces is 5 and in the feces and urine 15.5. 

 In this summary, as in the preceding one, it is shown that the preserv- 

 ative has a slight tendency to increase the solids in the feces. There 

 is also noticed a slight tendency to increase the solids in the urine. 

 A conclusion similar to that stated in the first summary seems to be 

 also justified in this case. 



SERIES III. 



As" in the preceding series the individual data for each member of 

 the class during Series III are found in the tables/ and discussion of 

 the data will be confined to the summaries. Four men only completed 

 nil the periods of Series III, namely, Nos. 1, 3, 4, and 5. The sum- 

 maiy, therefore, is confined to the data of these four men. During 

 the fore period, extending from February 19 to 27, inclusive, the aver- 

 age quantity of solids in the food is 691 grams. Of this amount 26.2 

 grams are recovered in the feces and 92.5 grams in the feces and 

 urine. The percentage of total solids recovered in the feces is 3.8 and 

 in the urine 11.4. The average daily balance during the fore period 

 is 598.5. Without discussing the data for the various subperiods, 

 attention will be directed to the summary of the whole preservative 

 period, extending from February 28 to March 11, inclusive. The 

 mean daily quantity of solids in the food during this period is 627 

 grams, of which 24.8 are recovered in the feces and 87.8 in the feces 



