824 



INFLUENCE OF FOOD PRESEKVATIVES ON HEALTH. 



TABLE VI. Urine determinations Supplemental study of volume and acidity, 

 Series XIII Continued. 



SUMMARIES. 



a Average of first and second preservative periods added to complete record for No. 6. 

 PRESENCE OF ALBUMIN AND THE REACTION OF THE URINE. 



During Series VII the presence of albumin was qualitatively deter- 

 mined only a limited number of times. The reaction of the urine 

 was not observed in this series, but was determined in connection with 

 additional data on albumin in the two special series, XI (see p. 1021) 

 and XIII, recorded in the preceding pages/ 



In the case of No. 1, during the fore period there was no positive 

 test for albumin obtained, and the same condition continued during 

 the first preservative subperiod and part of the second. During the 

 latter part of this subperiod, however, a very minute trace was 

 observed, which continued throughout the remainder of the experi- 

 ment with the one exception of an observation made in the fourth 

 preservative subperiod, when no albumin was found. 



In the case of No. 2 there is a positive test for albumin throughout 

 the entire period of observation. Minute traces were observed during 

 the preservative period, while the two observations made during the 

 after period indicated the presence of a trace. 



No positive reactions were obtained for No. 3 until the latter part 

 of the preservative period, when a minute trace was reported. During 

 the after period a very minute trace is recorded. 



In the cases of Nos. 4 and 5 negative results were obtained through- 

 out the period of observation, while No. 6 shows a small quantity in 

 every instance without regard to the administration of the preserva- 

 tive. 



There is only a broken record for No. 7, and all the observations 

 recorded are negative. In the case of No. 8 the tests for the presence 



