560 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



period. There are corresponding inverse changes in the percentage of 

 total sulphates present. The percentage of ethereal sulphates is 

 slightly increased in the preservative period, but falls in the after period 

 to a lower number than in the fore period. The percentage of inor- 

 ganic sulphates is somewhat low to begin with, but there is a very great 

 loss in the preservative period which is not quite wholly restored in 

 the after period. 



No. 8. 



There is a notable loss in this case in the percentage of neutral sul- 

 phur in the preservative period, and this loss is partially restored in 

 the after period, with corresponding inverse changes in the percentage 

 of total sulphates present. There is a slight increase in the percent- 

 age of ethereal sulphates in the preservative period, but in the after 

 period the number falls below that of the fore period. The percentage 

 of inorganic sulphates is very low, being slightly greater in the pre- 

 servative and after periods than in the fore period. 



No. 9. 



There is an increase in the percentage of neutral sulphur in the 

 preservative period, which is partially lost in the after period, with 

 corresponding inverse changes in the percentage of total sulphates 

 present. In the percentage of ethereal sulphates there is a loss in the 

 preservative period, and this loss is further increased in the after 

 period. There is but little change in the percentage of inorganic sul- 

 phur present in the three periods, a slight decrease occurring in the 

 preservative period and an increase in the after period. 



No. 10. 



There is an increase in the percentage of neutral sulphur in the 

 preservative period in this case and a corresponding decrease in the 

 total sulphates. There is also a slight increase in the percentage of 

 ethereal sulphates and a decrease in the percentage of inorganic sul- 

 phates. The data for the after period are incomplete. 



No. 11. 



There is a decrease in the percentage of neutral sulphates in this 

 case in the preservative period and a very large increase in the after 

 period, with corresponding inverse changes in the percentage of total 

 sulphates present. The ethereal sulphates are remarkably low in this 

 case and the percentage is slightly higher in the preservative period 

 than in either of the others. There is a slight increase in the percent- 

 age of inorganic sulphates in the preservative period and a notable loss 

 in the after period. 



