842 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



period, 1:17.8 in the preservative period, and 1:17.1 in the after 

 period. 



The amounts of sulphur expressed in percentage of the total sulphur 

 excreted shows practically the same variations as those previously 

 mentioned. The data for No. 7, being incomplete, are not included 

 in the averages, but are inserted as a matter of record. 



For No. 8 there is seen an increase in the amount of total sulphur, 

 neutral sulphur, and inorganic sulphates. The ethereal sulphates in 

 this case remain practically constant, there being a slight diminution 

 in the preservative and after periods as compared with the fore period. 

 The ratio of ethereal sulphates to inorganic sulphates is 1 : 9.2 in the 

 fore period, 1 : 12.1 in the preservative period, and 1 : 10.3 in the after 

 period. The percentage amounts of neutral sulphur for this subject 

 show a decrease in the preservative period from the fore period, with 

 a large increase in the after period, to an amount greater than in the 

 fore period. The total sulphates show an increase in the preservative 

 period and a decrease in the after period. The ethereal sulphates are 

 decreased in the preservative period, while the inorganic sulphates 

 show a corresponding increase. 



In the case of No. 9 the data in a general way agree closely with 

 those for No. 8. A striking contrast, however, is the decrease during 

 the preservative period of the ratio of ethereal to inorganic sulphates, 

 falling from 1: 14.1 in the fore period to 1: 13.4 in the preservative 

 period, remaining constant, namely, 1 : 13.3 in the after period. This 

 decrease is due to the relatively larger increase of ethereal sulphates 

 over the inorganic during the preservative period. This is also seen 

 where the amounts are expressed in per cent of the total sulphur. 

 The ethereal sulphates are practically constant throughout. 



The data for No. 10 agree in a general way very closely with those 

 of No. 8. The increase in the sulphur elimination is shown entirely 

 by the neutral and inorganic sulphates, the ethereal sulphates remain- 

 ing practically constant throughout. 



No. 11 shows a noticeable increase in the ethereal sulphates and a 

 ratio of this form to the inorganic sulphates which is abnormally high 

 throughout. In the fore period it is 1 : 21.4, in the preservative period 

 1 : 20.3, and in the after period 1 : 21.4. This ratio is similar to that of 

 No. 9 in the fact that it is lower in the preservative period. 



The neutral sulphur shows an increase throughout the period of 

 observation, while the inorganic sulphates are largely increased in the 

 preservative period, but fall to an amount less than in the fore period 

 during the after period. 



In the case of No. 12 there is a notable increase in the actual amount 

 of ethereal sulphates which causes the ratio to inorganic sulphates to 

 be but slightly higher during the preservative period. The neutral 



