440 



Profs. Percy Frankland and Marshall Ward. 



days after infection, the unsterilised Thames ivater still contained living 

 typhoid bacilli, as did also the same water to which O'l per cent, common 

 salt had been added, and which had been preserved at 6 8 1 C. ; on the 

 other hand, in the unsterilised Thames waters to which I'O and 3'0 per 

 cent, respectively of salt had been added, as well as in that which had 

 only received O'l per cent, salt, but which had been kept at 19 C., the 

 typhoid bacilli were no longer demonstrable. 



These saline waters were again examined by phenol broth-culture 

 on 5.6.1893, with the following results : 



Examination by Phenol Broth-culture, 5.6.1893. 



Thus from the above the only water in which the presence of 

 typhoid was still with certainty to be expected was the one to which 

 O'l per cent, salt had been added, and which had been kept at 6 8 C. 

 in the refrigerator, for this was the only one which gave a positive 



