216 



CLEGG. 



Well imniber 12, dug in the bed of a 

 streiun. (Drinking water.) 



Number of bacteria per cubic centi- 

 meter, not determined; 

 Bacillus coli communis; 

 Amoebse and flagellata; 

 Bacillus pyocya Ileus. 



Well number 13, dug in the bed of a 

 stream. (Drinking water. ) 



Number of bacteria per cubic^ centi- 

 meter, 9,000; 

 Aniceba» and flagellata; 

 Bacillus coli communis; 

 Bacillus pyocyaneus; 

 Vibrios. 



Well number 13 was examined pai'ticiilarly for the typhoid bacillus 

 since cases of typhoid fever had occurred in the vicinity of it. A small, 

 actively motile organism was isolated, which was ])athogenic for small 

 animals. It belonged to the colon group, but was not the typhoid- 

 bacillus. 



None of the vibrios isolated from the above well waters were cholera 

 spirilla and they were not agglutiuiited by anticholcra sera. Some of 

 them gave the cholera red reaction, others did not. Some were very 

 toxic for guinea pigs. 



In some of the houses in Taytay the drinking water is kept in 

 earthen jars which stand side by side, the same utensils being used for 

 removing water from both jars. l']xamination made of the drinking 

 water of seven jars' showed all infected with nmoebae. 



