SULPHUROUS ACID AND SULPHITES. 1027 



In the case of No. 3 the volume is diminished during the preservative 

 1 period and slightly increased in the after period. There is a gradual 

 increase in solids excreted throughout the periods of observation. 

 There is also shown a tendency on the part of the preservative to 

 diminish the total quantity- of nitrogen appearing in the urine. The 

 quantity of urea is also less in the preservative period than in the fore 

 period. The total nitrogen in the urine and the nitrogen as urea are 

 increased during the after period. The uric acid is slightly decreased 

 during the preservative period, and there is also a slight decrease of 

 xanthin, while kreatinin is increased in the preservative period. The 

 ammonia diminishes and the undetermined nitrogen increases. The 

 percentage of nitrogen excreted, based on the total ingested, also 

 diminishes in the preservative period, and likewise the percentage of 

 nitrogen excreted as urea and as uric acid. 



In the case of No. 4 there is an indication, as in the case of No. 3, of 

 a diminution in the average volume of urine excreted. The total 

 solids excreted during the preservative period is greater than in the 

 fore period or in the after period. The total nitrogen excreted in the 

 urine is less in the preservative period than in the.fore period, and the 

 total urea is likewise less. The uric acid excreted in the preservative 

 period is almost the same as in the fore and after periods. There is 

 little change in the distribution of the other nitrogenous bodies of the 

 urine, kreatinin again being slightly increased. The percentage of nitro- 

 gen excreted in the urine, based on the total nitrogen ingested, decreases 

 during the preservative period and again in the fore period. The per- 

 centage of nitrogen excreted as urea increases in the preservative 

 period and again slightly in the after period ; the percentage excretion 

 of uric acid remains almost the same. The percentage of kreatinin- 

 nitrogen is slightly increased in the preservative period. The per- 

 centage of nitrogen excreted as ammonia is the same in the fore and 

 preservative periods, and is slightly decreased in the after period. 

 _ In the case of No. 10 the volume of the urine is slightly increased 

 during the preservative period and to a much greater extent in the 

 after period. The weight of total solids excreted is slightly diminished 

 during the preservative period, but very markedly increased in the 

 after period. The total nitrogen excreted in the urine is somewhat 

 less in the preservative period than in the^fore period. The nitrogen 

 excreted as urea is also less in the preservative period than in the fore 

 period. The quantity of nitrogen excreted as ammonia slightly 

 increases in the preservative period over the fore period. The per- 

 centage of nitrogen excreted in the urine of total ingested nitrogen is 

 very markedly decreased in the preservative period, while it rises to 

 some extent in the after period. The percentage of nitrogen excreted 

 as urea is slightly less in the preservative period and is increased in the 

 after period over the percentage of the fore period. The percentage 

 of nitrogen as uric acid is slightly increased during the preservative 

 11240 Bull. 84, pt 307 18 



