542 INFLUENCE OF FOOD PKESEKVATIVES ON HEALTH. 



period, while the ratio of sulphuric acid to nitrogen remains unchanged. 

 In the after period there is a still further slight decrease in the ratio 

 of the sulphur to the nitrogen, while the ratio of phosphoric acid to 

 nitrogen rises to a greater magnitude than in the fore period. The 

 ratio of sulphuric acid to nitrogen remains unchanged. 



The ratio of sulphur to nitrogen in the preservative period is the 

 same as in the fore period. The ratio of sulphuric acid to nitrogen is 

 the same in the preservative period as in the fore period. There is a 

 slight decrease in the preservative period in the ratio of phosphoric 

 acid to nitrogen. In the after period there is a notable decrease in 

 the ratio of sulphur to nitrogen and a slight decrease in the ratio of 

 sulphuric acid to nitrogen, and the ratio of phosphoric acid to nitro- 

 gen is higher than in the preservative period, but not so high as in 

 the fore period. The fore period was, however, interrupted by the 



illness of the subject. 



No. 4. 



A slight increase is noted in the ratio of sulphur and sulphuric acid 

 in the preservative period and a slight decrease in the ratio of phos- 

 phoric acid. There is a further decrease in the sulphur and sulphuric- 

 acid ratios in the after period. There is, on the other hand, an increase 

 in the phosphoric-acid ratio in this period. 



No. 5. 



A notable decrease in the sulphur ratio is found in this case in the 

 preservative period, while the ratios of sulphuric acid and phosphoric 

 acid remain unchanged. In the 'after period there is a still further 

 slight decrease in the sulphur ratio, no change in the sulphuric-acid 

 ratio, and a notable increase in the phosphoric-acid ratio. 



No. 6. 



A slight decrease of the sulphur and sulphuric-acid ratios is noticed 

 in this case in the preservative period and a slight increase in the 

 phosphoric-acid ratio. In the after period there is a notable decrease 

 in the sulphur ratio, a still further slight decrease in the sulphuric- 

 acid ratio, and a slight increase in the phosphoric- acid ratio. 



No. 7. 



A notable decrease in the sulphur ratio is indicated in this case in 

 the preservative period, a slight decrease in the sulphuric-acid ratio, 

 and a heavy increase in the phosphoric-acid ratio. In the after period 

 the sulphur ratio is restored in part to its original magnitude and the 

 sulphuric-acid ratio exactly to its original magnitude. There is a very 

 notable increase in the magnitude of the phosphoric-acid ratio. 



