RY R. UREIG-SMITH. 



325 



E. cinerea was tested, the results did not bear out the conten- 

 tion. Two specimens were tested. 



Table v. B. coli communis 



Compared with the rectified oils, they have a low germicidal 

 value. Furthermore, while the rectified oil with the higher acid 

 content was the better, the crude oil with 81" of acidity was 

 rather less germicidal than that with 12°. The acidity cannot 

 therefore be depended upon as an index of the disinfecting value 

 of the oil. It would almost seem as if the act of distilling the 

 oil with steam had brought about the production of germicidal 

 substances from the components of the oil. So far, these speci- 

 mens of oil, both rectified and crude, had not been directly 

 related one with the other, and, therefore, one could only guess 

 at what might be the reason for their different behaviours. But 

 Mr. H. G. Smith had two specimens, one a rectified oil, another 

 the crude oil from which it was obtained, and it was thought 

 that an examination of these might throw some light upon the 

 matter. 



