576 INFLUENCE OF FOOD PEESERVATIVES ON HEALTH. 



shoved them to be numerous and extremely numerous. The figures 

 for the relative occurrence by periods would indicate a considerable 

 reduction of these bodies during the preservative period, with an 

 increase in the after period; but it must be remembered that these 

 figures are used as representative in a general way of the mass expres- 

 sion of a condition and are not mathematically exact. In this case the 

 individual variations do not seem to bear out the conclusion suggested 

 by the average certainly not to the extent indicated. 



Epithelium cells. These bodies were present in all cases, a few 

 being present in the majority of observations, and occurring uniformly 

 throughout the fore period except in the case of No. 12, where very 

 few were indicated. During the preservative period the record for 

 No. 2 shows numerous cells present in one observation, and in the 

 other three examinations they were fairly numerous; in the case of 

 No. 6 they were fairly rmmerons in one instance and a few were 

 present at each of the other examinations. In the after period Nos. 2 

 and 6 continued to show the largest number present, one examination 

 showing the cells to be numerous and one few in both cases. The 

 figures on the relative occurrence in the three periods show that the 

 number of epithelium cells present decreased during the preservative 

 period and increased again to almost the same number as were present 

 in the fore period after the preservative was withdrawn. The changes, 

 however, were comparatively small, the figures reading 191.7, 183.3, 

 and 191.3 for the fore, preservative, and after periods, respectively. 



Leucocytes. Leucocytes were present in the urine in all cases and 

 at all observations with the exception of one in the fore period of No. 

 12 and the first observation of the preservative period of Nos. 2 and 10. 

 In the large majority of cases few were reported, and the} 7 were fairly 

 numerous only in one case, the last observation of the preservative 

 period for No. 6. The figures for the relative occurrence show a 

 decided tendency to increase the presence of these bodies during the 

 preservative period, with a slight decrease in the after period. 



Red Mood cells. No red blood cells were found at any time during 

 the experiment. 



Hyaline casts. The hyaline casts are present in greater numbers 

 than any of the other forms of casts observed. There are only three 

 cases, however, in which more than a few are reported, namely, No. 

 2, one case reported fairty numerous in the after period; No. 6, one 

 case numerous in the after period; and No. 9, one case reported numer- 

 ous at the close of the preservative period. In the case of No. 3 they 

 were not present at all at four of the examinations, and for Nos. 2, 6, 

 7, and 9 they are reported at each observation. The figures on the 

 relative occurrence indicate a decided increase of these casts during 

 the preservative period and a slight continued increase during the 

 after period. 



