Report on the Bacteriology of Water. 441 



result with the phenol broth in twenty-four hours, and although 

 several others gave the reaction in forty-eight hours, it will be seen, 

 by reference to p. 427, that even the uninfected unsterilised Thames 

 water gave the turbidity in forty-eight hours when examined on the 

 same day. 



The plate cultivations made from the above turbid broth tubes 

 gave the following results : 



Broth tube. 



(31.) Typhoid-infected Unsterilised Thames + 1 per cent. NaCJ, 

 Flask 1 Refrigerator. (Typhoid Present.') 



The colonies on the plate resembled those of typhoid, and 

 they were confirmed by potato growth, negative indol, and gas- 

 bubble tests. 



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

 Flask 1 Refrigerator. (Typhoid Absent.) 



The colonies presenting any sort of resemblance to those of 

 typhoid were transferred to potatoes, on which they gave a 

 pink growth, therefore certainly not typhoid. 



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

 Flask 1 Incubator. (Typhoid Absent.) 



Results similar to those obtained with No. 35 above. 



(25.) Typhoid-infected Unsterilised Thames + O'l per cent. NaCl, 

 Flask 1 Incubator. (Typhoid Absent.) 



Restilts similar to those obtained with Nos. 35 and 29 above. 



(27.) Typhoid-infected Unsterilised Thames + 1 per cent. NaGI, 

 Flask 1 Incubator. (Typhoid Absent.) 



The colonies presented some resemblance to those of typhoid, 

 as did also the potato growths; on inoculating from latter, 

 however, into gelatine tube, the gelatine underwent slow 

 liquefaction, clearly showing that it was not really typhoid. 



(33.) Typhoid-infected Unsterilised Thames + 1 per cent. NaCl, 

 Flask 1 Refrigerator. (Typhoid Absent.) 



The colonies which presented any sort of resemblance to 

 those of typhoid were transferred to potatoes, on which they 

 gave a pink growth, and, on inoculating into gelatine tubes, 

 gas bubbles were formed, followed by liquefaction. Therefore, 

 certainly not typhoid. 



