BORIC ACID AND BORAX. 247 



quantity of urine secreted, but there seems to be a slight tendency to 

 decrease the amount secrejbed in the preservative and after periods. 



ALBUMIN. 



In tho*se few cases where there was normally a mere trace of albu- 

 min in the urine it is shown by the data that the general tendency of 

 the preservative used is to increase the trace of albumin in the urine, 

 and this increase is manifested also during the after periods. This 

 effect of the administration of the preservative is best shown in the 

 graphic representation of traces of albumin in the urine. 



MICROSCOPIC BODIES. 



Microscopic examinations of the urine were made for the follow- 

 ing substances: Uric-acid crystals; urates; oxalate of lime; phos- 

 phates crystalline and amorphous; epithelium cells of all kinds; 

 leucocytes; red blood cells; casts hyaline, finely granular, coarsely 

 granular, epithelial, and other forms; mucous cylindroids; and mucous 

 strands. 



The microscopic examinations were made at three periods during 

 each series, except in Series I, during which time the microscopic 

 supervision of the urine had not been instituted. The examinations 

 were made once during the fore period, once or more during the pre- 

 servative period, and once near the close of the after period. 



Reviewing the data as a whole in regard to the appearance of these 

 microscopic bodies in the urine, the fact which appears prominently 

 is the great variation in the number and character of these micro- 

 chemical bodies. They occur constantly in some cases in very much 

 greater abundance than in others. There are a few cases in fact, 

 quite a number where the relative abundance of these bodies seems 

 to be increased during the administration of the preservative. There 

 is a smaller number of cases in which the contrary fact occurs. In 

 the greater number of cases, however, the administration of the pre- 

 servative appears to have had no influence upon the relative abundance 

 of these bodies. The data, therefore, as a whole, can not be regarded 

 as conclusive respecting the influence of the preservative upon the 

 number or kind of micro-chemical bodies occuring in the urine. 



INFLUENCE OF THE PRESERVATIVE UPON THE METABOLISM OF NITROGEN. 



There is only a slight ftffect produced as a whole, as determined by 

 the data of experiment, upon the excretion of nitrogen. The indi- 

 vidual variations are somewhat marked, showing the danger of depend- 

 ing too positively upon data from only one or two persons. A slight 

 tendency is shown, however, on the part of the preservative to decrease 

 the excretion of nitrogen, which tendency becomes more marked after 



