SALICYLIC ACID AND SALIC YLATES. 505 



and probably the majority, the administration of the preservative 

 developed unfavorable conditions, while in the minority of the cases 

 it seemed to have practically little effect one way or the other upon 

 those who consumed it. 



BODY WEIGHTS. 



VARIATIONS IN BODY WEIGHTS. 



In order to bring this important factor into prominence and to ren- 

 der a comparison easier, the changes in body weights of the individuals, 

 daily and by periods, are expressed in graphic form in figs. 1 and 2, and 

 the general average for nine men, by periods, is also given. The data 

 for total and average weights, by periods, on which the lines of aver- 

 age weight in the charts are based may be found in Table IV, on the 

 relation between the food weights and body weights, under which head 

 these data are discussed in greater detail. The daily variations are 

 shown only by the broken lines, of which the straight lines give the 

 average. 



It is seen that No. 1 experienced a marked loss of weight during the 

 preservative period and a greater loss during the after period. In 

 the case of No. 2, the same condition exists, but in a still more marked 

 degree. The case of No. 3 is especially interesting. This subject at 

 the opening of the experiment weighed 52.78 kilograms, but after the 

 second day of the fore period was taken ill with the grippe and was 

 confined to his room until October 26. On his return to the table his 

 weight had decreased to 50.54 kilograms. A new ration was selected 

 as suited to his condition of convalescence and calculated to restore 

 normal conditions. The graphic chart shows that there was a slight 

 tendency throughout the preservative period toward a gain in weight, 

 amounting as a whole throughout the preservative period of 25 days 

 to 0.51 kilogram, but when the preservative was withdrawn the 

 weight suddenly rises and the average for the after period shows a 

 very marked increase, amounting to again of 0.73 kilogram for the ten 

 days of that period. It is certainly indicated in this instance that the 

 preservative inhibited to a marked degree the assimilation of the food, 

 as a ration had been allowed which would meet the needs of the body 

 in repairing and building up tissue after a short illness. 



In the case of No. 4 the weight during the preservative period was 

 almost identical with that of the fore period, but there was a slight 

 loss of weight during the after period. The same conditions obtain 

 in the case of No. 5. No. 6 shows an extreme case of very decided 

 loss of weight amounting to about 1 kilogram in both the preservative 

 and the after periods. No. 7 loses more than half a kilogram in 

 the preservative period and about a kilogram in the after period. 

 No. 8 lost 0.58 kilogram in the preservative period and 0.78 kilogram 



' 7656 No. 84, pt 206 3 



