76 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



ment, though not a complete cessation of the headache, up to the 20th, 

 when the preservative period ends. There has been during all this 

 time no other disturbance of any nature in any of the body functions, 

 the temperature remaining quite constant, with only such variations 

 in the pulsations as can be easily attributed to the character of the 

 exercise taken. 



With the cessation of the administration of the preservative the 

 pains in the head rapidly disappear and no complaint is made concern- 

 ing them during the after period. On the 29th of June, at the close 

 of the observation, the normal conditions, even in respect to the head- 

 ache, are apparently entirely restored. No appreciable quantities of 

 boric acid are found in the urine after June 21. 



A review of the above data seems to indicate a rather close connec- 

 tion between the continued administration of the preservative, even 

 in small quantities, and the occurrence, recrudescence, and persistence 

 of the headache, perhaps more properly described as an uncomfortable 

 feeling in the head. During all this time there is no disturbance of the 

 body functions save as indicated in the analytical data and record of 

 body weights, the temperature remaining practically normal and the 

 other functions of the body being conducted in the ordinary manner. 

 There seems to be no connection traceable between the occasional nose- 

 bleeding noted and the administration of the preservative, unless it may 

 be associated with the apparent increased blood pressure in the head. 



No. 2F. C. W. 



The vital functions are normal on April 24, the recorded tempera- 

 tures being 98.4 and 98.4 F. and the pulsations 77 and 75 per 

 minute, respectively, before and after dinner. Somewhat vigorous 

 exercise and ball playing on the 28th of April cause an increase in the 

 pulsations, which reach the number of 100. There is no febrile dis- 

 turbance connected therewith. On May 1, the last day of the fore 

 period, all the vital functions are normal. 



During the preservative period there are no disturbances of the 

 vital functions until the 6th of May, when a slight headache is reported. 

 This headache did not recur for some time and can not be justly 

 attributed to the administered preservative. The next date on which 

 headache is noted is May 18. It still persists on the 19th, in conjunc- 

 tion with a dull, heavy feeling, as described by No. 2. There is no 

 diarrhea or tendency thereto and no increase in temperature, while 

 the other vital functions are normal. The headache recurs on May 

 22, followed by a few days of intermission; then another recurrence 

 on the 27th, persisting with increased intensity on the 28th and a gen- 

 eral feeling of malaise. On the 29th the headache increases, the 

 appetite fails to a considerable extent, and a general ill feeling pre- 

 vails. After a day or two of intermission there is a recurrence of the 



