504 INFLUENCE OF FOOD PKESEKVATIVES ON HEALTH. 



throughout the night, but did not interfere with the appetite the fol- 

 lowing day. On the 20th No. 12 was in excellent condition again. 

 The feeling of hunger continued on the 22d of November with a head- 

 ache which lasted all da}% preceded by a restless night, No. 12 report- 

 ing that he had very little sleep the night before. 



The sixth preservative subperiod found No. 12 in good condition, 

 weighing 70.15 kilograms and with normal temperature and pulse. 

 During the remainder of this subperiod he felt very well, and the 

 close of the preservative period found him in excellent condition, 

 weighing 70.22 kilograms and with normal temperature and pulse. 

 The average weight for the entire preservative period was 70.03 kilo- 

 grams, an increase as compared with the average weight of the fore 

 periods, 69.70 kilograms. 



In the beginning of the after period No. 12 weighed 69.95 kilo- 

 grams, with a temperature just a trifle below the normal and with 

 normal pulsation. 



During the first day of the after period No. 12 experienced a con- 

 siderable degree of hunger, which was not entirely satisfied by the 

 dinner. This feeling of hunger continued for two or three days, but 

 with no other unfavorable symptoms. No. 12 continued to feel better 

 during the whole of the after period and at its close weighed 69.8 kilo- 

 grams. His average weight during the after period was 69.87 kilo- 

 grams, a slight increase over that of the fore period, but a slight 

 decrease as compared with the preservative period. 



From the above description it is seen that No. 12 suffered very little 

 during the administration of the preservative save from headache and 

 fullness in the head and sometimes a disposition to drowsiness. The 

 feeling of hunger, which was very marked in this case, was especially 

 pronounced in the after period, and this, while similar to two or three 

 cases, is quite different from the experience of most of the other 

 subjects. 



CONCLUSIONS. 



A general review of the medical data shows in some instances decid- 

 edly unfavorable symptoms attending the use of the salicylic acid, 

 while in a minority of cases no symptoms of a distinctly unfavorable 

 character can be attributed to the use of the preservative. In the 

 majority of cases there was a strong feeling of hunger developed dur- 

 ing the administration of the preservative, especially during its early 

 stages, although the rations served were not less in quantity and were 

 of the same quality as those which were provided during the fore 

 period. In at least three of the cases perhaps four the feeling of 

 hunger which was developed was noticeable chiefly during the after 

 period. The general conclusion, therefore, judged by the medical 

 history of all the cases considered as a whole, is that in some instances, 



