SULPHUROUS ACID AND SULPHITES. 811 



periods named are 1.0300 for the fore period, 1.0293 for the preserva- 

 tive period, and 1.0297 for the after period. The average total quan- 

 tity of dry solids excreted during the fore period is 67.7 grams, for the 

 preservative period 68.6 grams, and for the after period 68.7 grams. 

 In this case the volume of urine is considerably increased during the 

 preservative period and diminished somewhat during the after 

 period, but does not fall to the amount of the fore period. The 

 specific gravity is slightly diminished during the preservative period, 

 and in the after period is increased to almost the same figure as in the 

 fore period. The quantity of total solids excreted is increased by 

 nine-tenths of a gram daily in the preservative period and by 1 

 gram daily in the after period, as compared with the fore period. 



The volume of urine excreted by No. 2 in the fore period is 1,577 cc, 

 1,565 cc during the preservative period, and 1,470 cc during the after 

 period. The specific gravity of the urine during the fore period is 

 1.0191, during the preservative period 1.0187, and in the after period 

 1.0195. The total weight of dry solids excreted daily during the fore 

 period is 73.7 grams, during the preservative period 71.7 grams, and 

 during the after period 70 grams. These data show a slight decrease 

 in the volume of liquid and also in the specific gravity in the preserv- 

 ative period, an additional decrease of almost 100 cc per day in the 

 after period, attended, however, by an increase of specific gravity. 

 The total quantity of solids eliminated is diminished by 2 grams daily 

 in the preservative period and by an additional 1.7 grams during the 

 after period. 



In the case of No. 3 the average daily volume of urine during the 

 fore period is 1,231 cc, during the preservative period 1,290 cc, and 

 during the after period 1,251 cc. The specific gravities of the urine 

 for the three periods are 1.0212, 1.0221, and 1.0214, respectively. 

 The total weights of dry solids excreted daily during the three periods 

 are 63.5 grams, 69.3 grams, and 65.5 grams, respectively. In this 

 case there is a slight increase in the volume of the urine and also in 

 the specific gravity during the preservative period. The volume 

 excreted during the after period is less than during the preservative 

 period, but not so small as in the fore period. The specific gravity 

 also falls in the after period, but is slightly higher than in the fore 

 period. The weight of total solids excreted is greatest in the preserv- 

 ative period, falling in the after period, but not to quite so low a 

 number as in the fore period. 



The average daily total volume of urine excreted by No. 4 during 

 the fore period is 973 cc, during the preservative period 1,041 cc, and 

 during the after period 997 cc. The specific gravities of the urine 

 during these periods are 1.0300, 1.0291, and 1.0296, respectively. 

 The average weights of dry solids excreted daily for the three periods 

 are 71.6 grams / 74.2 grams, and 72.2 grams, respectively. There is an 



