DIRECT EXAMINATION 



SI 



of the U. S. Pure Food and Drugs Act? This is as yet an un- 

 settled question and one that requires further careful considera- 

 tion, even calling for some extensive investigation in order that 

 certain disputed points may be finally settled. There are, 

 however, certain results based upon extensive observation which 



Fig. 12. — Tjrpe of mold development in the tomato pulp during and after the 

 processing. According to tests made by B. J. Howard of the Bureau of Chemistry, 

 mold wiU develop in tomato catsup containing o.i per cent, sodium benzoate. Com- 

 pare the hjrphae with those shown in Fig. ii. They are much larger in transverse 

 diameter and the walls of the cells are much thinner. — {Bitting, Bull, iig, Bureau 

 of Chemistry, U. S. Dept. of Agriculture.)' 



may be set down as conclusive. The organisms of all kinds which 

 may occur in and upon clean and uncontaminated ripe fruit, 

 for example, are negligible quantitatively as well as qualitatively. 

 Such organisms as do occur are limited to the exterior. Only 

 under abnormal conditions do micro-organisms find their way 

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