82 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



special period extended from March 9 to May 1, inclusive, though No. 

 14 continued the experiment with the fifth series, taking the preserva- 

 tive until June 20, inclusive. 



No. 5, later No. 13. 



The observations on No. 5 (Series I) are of a fragmentary character, 

 due to the interruption of the observations at various periods by illness 

 brought on by causes entirely apart from the administration of the 

 preservative. These observations are of little value for comparative 

 purposes, but may prove of some value in tracing the effect of the 

 preservative upon digestion and health over a considerable period of 

 time. Observations on No. 5 were commenced on December 9. On 

 this date the temperatjure of the body is normal, the pulsations 86 per 

 minute at 5.30 p. m., before dinner, and the body weight 52.72 kilo- 

 grams. There is a slight febrile disturbance on the 16th of December, 

 which continues on the 17th and to a less extent on the 18th. On the 

 20th, however, the temperature is again normal, but the pulsations 

 somewhat above the normal namely, 90 and 94 per minute. On 

 December 22, on entering upon the preservative period, the conditions 

 are not very favorable, there being a slight febrile excitement, the tem- 

 perature rising to 99 and 98.6 F. and the pulsations to 101 and 103, 

 respectively, before and after dinner. The weight of the body on this 

 date is 52.42 kilograms. 



The data relating to No. 5 for this first series are included with the 

 general discussion of that series, and so need not be repeated in greater 

 detail here. The quantity of preservative given per day to No. 5 at 

 this period is 1 gram from December 22 to 26, inclusive, 2 grams from 

 December 27 to 30, inclusive, and 3 grams from December 31 to Jan- 

 uary 3, inclusive. 



From January 4 until the beginning of the next series, No. 5 

 receives no preservative. Shortly after the end of the first series 

 No. 5 is attacked with a severe fever and grippe, with which he is 

 quite ill for a long time, at times being confined to his bed for several 

 days in succession. It does not appear that this attack is due in any 

 way to the administration of the preservative. It seems to be an 

 ordinary attack, but of a very persistent nature, attended with loss of 

 appetite and a low form of fever, but without any other t3 r phoid 

 symptoms. For this reason, at the beginning of the third series, 

 when No. 5 would naturally have come again under observation, he 

 was not in a condition for further experimental study and his place 

 was taken by another. On February 24 No. 5, R. V. F. (now having 

 assumed the number 13), is again able to appear and resume his place 

 at the table. His weight has fallen from over 54 kilograms, before 

 his illness, to the minimum, 49.5 kilograms on his return. There is 

 still at this time some little febrile excitement, the temperature being 



