BORIC ACID AND BOEAX. 241 



and urine. The average percentage of total solids eliminated in the 

 feces, during this period is 4, and in the urine 10.1. The average 

 daily balance is 539.2 grams. During the after period, extending 

 from March 12 to 19, inclusive, the average quantity of solids in the 

 food is 621 grams, of which 23.8 grams are recovered in the feces and 

 79.4 in the feces and urine. The average percentage of solids recov- 

 ered in the feces is 3.9, and in the feces and urine 12.8. The average 

 daily balance is 541.6 grams. These data show a slight tendency on 

 the part of the preservative to increase the amount of solids appear- 

 ing in the feces. The total effect, however, is not very great; yet 

 when taken in connection with the preceding data it is evidence of a 

 slight tendency to restrict the activity of the digestive ferments. A 

 second summary has also been obtained with Series III, in which five 

 members of the table are included, namely, Nos. 1, 2, 3, 4, and 5. This 

 summary includes only the fore period and the first subperiod, extend- 

 ing over six days. The average daily quantity of solids in the food 

 during the fore period is 694.2, of which 26.5 grams are recovered in 

 the feces and 91.6 grams in the feces and urine. The average per- 

 centage of solids recovered in the feces is 3.8 and in the urine 9.4. 

 The average daily balance is 602.6 grams. During the first subperiod 

 the average quantity of solids in the foods is 687 grams, of which there 

 is recovered in the feces 29 grams, and in the feces and urine 94.1 

 grams. The average percentage of total solids recovered in the feces 

 during this period is 4.2 and in the urine 9.5, and the average daily 

 balance is 592.9 grams. These data also show, as in the preceding 

 case, a slight tendency on the part of the preservative to increase the 

 percentage of solids in the feces, and to this extent to restrict or limit 

 the activity of the digestive ferments. 



SERIES IV. 



The individual data in this case are given in full in the balance sheets, 

 but only the summaries will be discussed. In Series IV the summar}^ 

 includes the data for only three of the individuals, namely, Nos. 8, 9, 

 and 10. During the fore period, extending from March 20 to 27, the 

 average quantity of solids in the food is 636 grams. Of this amount 25.3 

 grams appear in the feces and 86.888 grams in the feces and urine. 

 The average percentage of solids eliminated in the feces is 4 and in the 

 feces and urine 13.6. The average daily balance of solids is 549.112 

 grams. The data for the \arious subperiods, extending from March 28 

 to April 14, are given separately, but the data for the entire preservative 

 poriodonty will be considered in this comparison. During this period 

 the average daily quantity of solids in the food is 646 grams, of which 

 30.2 grams appear in the feces and 89.803 grams in the feces and urine. 

 The percentage of solids eliminated in the feces is 4.7 and in the feces 

 and urine 13.9. The average daily balance is 556.197 grams. During 

 4242 No. 84, pt 104 16 



