DIRECT EXAMINATION 51 



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

 settled question and one that requires further careful considera- 

 ion, even calling for some extensive investigation in order that 

 :ertain disputed points may be finally settled. There are, 

 lowever, certain results based upon extensive observation which 



FIG. 12. Type 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 will develop in tomato catsup containing o.i per cent, sodium benzoate. Com- 

 pare the hyphse with those shown in Fig. n. They are much larger in transverse 

 diameter and the walls of the cells are much thinner. (Bitting, Bull. 119, Bureau 

 of Chemistry, U. S. Dept. of Agriculture.} 



