726 



INFLUENCE OF FOOD . PRESEEVATIVES ON HEALTH. 



SCHEDULE OF ADMINISTRATION OF THE PRESERVATIVE. 



The schedule of administration of the preservative and the dates 

 covered by the periods of observation are shown in Table IV. 



TABLE IV. Schedule of administration of salicylic acid and salicylates for special study 



on four men /Series XL 



aTheamountsofsodiumsalicylateadministeredtoNos.il and 12 contained amounts of salicylic 

 acid equivalent to the corresponding doses given Nos. 1 and 2 i. e., 0.25, 0.50, 0.75, and 1 gram in the 

 respective subperiods. 



SUPPLEMENTAL STUDY OF THE PRESENCE OF ALBUMIN AND THE REACTION OF THE URINE. 



A further study of the effect of salicylic acid and sodium salicylate 

 on the acidity of the urine and the occurrence of albumin therein was 

 made in the case of the four subjects of the special study. In Table V 

 are given the individual and summarized results of this investigation. 



The acidity of the urine is comparatively expressed by the number 

 of cubic centimeters of tenth-normal sodium hydroxid solution required 

 to neutralize 100 cc of the urine, using phenolphthalein as indicator. 

 The average acidity for Nos. 1 and 2, receiving salicylic acid, in the 

 fore period is 38.9, in the preservative period 41.7, and in the after 

 period 37.1. These figures indicate a tendency on the part of the 

 salicylic acid to increase the acidity of the urine. 



