444 Profs. Percy Frankland and Marshall Ward. 



from such a liquefied tube on to potatoes, the same typhoid-like 

 growth was obtained. This organism, which was again sub- 

 sequently met with, might easily lead to a false diagnosis of 

 typhoid, unless the gelatine tubes were preserved for some 

 time. 



Broth tube. 



(75.) Typhoid-infected Unsterilised Thames + 1 per cent. Nad, 

 Flask 1 Incubator. (Typhoid Absent.) 



The colonies on transference to potatoes gave rise to light- 

 brown growth, not like typhoid. 



(82.) Typhoid-infected Unsterilised Thames + 1 per cent. NaCI, 

 Flask 1 Refrigerator. (Typhoid Absent.) 



The colonies liquefied the gelatine, and gave rise to easily 

 visible growths on potatoes. 



(78.) Typhoid-infected Unsterilised Thames + 3 per cent. NaCl,. 

 Flask 1 Incubator. (Typhoid Absent.) 



The colonies gave rise to pink growths on potatoes ; there- 

 fore certainly not typhoid. 



(84.) Typhoid-infected Unsterilised Thames + 3 per cent. NaCl,. 

 Flask 1 Refrigerator. (Typhoid Absent.) 



Same results as with No. 78 above. 



Thus in the case of none of these saline waters could a diagnosis of 

 typhoid bacilli be made on 13.6.1893; by reference to p. 433 it will be 

 seen also that on 14.6.1893 the typhoid bacilli were no longer demonstrable 

 in the Unsterilised Thames water to which no salt had been added. 



These saline waters were again examined by phenol broth-culture 

 on 21.6.1893, with the following results : 



