BORIC ACID AND BOEAX. 



197 



TABLE XL. Summary of urine determinations for Series V for Nos. 1, 3, and 5. 

 [Averages per man per day.] 



TRACES OF ALBUMIN. 



In no instance was the quantity of albumin in the urine sufficient to 

 excite suspicion of a state of disease. There were, however, in some 

 cases minute traces of albuminous particles, responding to the ordi- 

 nary reactions, which should be noted. For convenience of illustra- 

 tion the presence of these minute quantities is represented graphically. 



In the first series the tests for these traces of albumin were not 

 regularly made; therefore the first series of observations is excluded 

 from the comparison. In the succeeding series a comparison has been 

 made of all the members of each series who completed the entire course 

 of observation. Those who went through partially or were incapaci- 

 tated by illness or otherwise from completing the course are excluded. 

 A graphic representation is made of these traces of albumin, based 

 upon the strength of the reaction ascertained, for in no case was there 

 a quantity sufficient to be measured with any accuracy quantitatively. 

 The amount of albumin present is expressed according to the following 

 scale: &, Very minute trace; &, minute trace; <?, trace; d, strong trace; 

 <?, small quantity; f, considerable quantity. (See fig. 8.) The data 

 represent the mean for all men of each series completing the entire 

 course, namely, one in Series II, three in Series III, two in Series IV, 

 and four in Series V. The lines at the bottom of the chart represent 

 the mean results of Series II, III, IV, and V combined. The dotted 

 line in each case shows the daily variations, and the continuous line 

 shows the mean quantity for the whole of the period. 



In Series II a slight increase in the quantity of the albumin in the 

 urine under the influence of the preservative is shown, and this increase 

 is continued in a marked manner in the after period until near its 

 close, when the quantity returns again to the normal or even below. 

 In Series III there is likewise a marked increase in the quantity of 

 albumin in the urine during the administration of the preservative, but 

 a decrease during the after period, which brings the amount down 

 almost to the normal for the fore period. The same phenomena are 

 shown in Series IV, but not to the same extent, the quantity of albu- 



