448 ^^6 Philippine Journal of Science wis 



Table V. — Alabang Experiment Station, Rizal Province. Well 2. 



Samples taken (April 11, 1918) from pipe leading directly from well— not through collectinK 

 tank ; water, sweet ; depth, 231 meters ; in use since October, 1908. 



i 



a 

 < 



Nutrient medium. 



Result. 



24 hours at 86°. 



43 hours at from 



36-37°. 



3 days at from 

 36-37°. 



6 days. 



i 

 a 

 O 



1 



11 



i 



<! 



to V 



If 



i 



3 

 'S 

 <! 



© c 



§1 



6% 



O 



1 





cc. 

 0.1 



1 

 6 



0.1 

 1 



5 

 1 



0.1 

 1 

 5 

 0.1 



1 

 6 

 0.1 



1 

 6 



1 



Glucose-broth fermenta- 

 tion... 







18 

 A 





 



+ 





 

 

 





 

 A 





 

 





 

 





 

 



+ 

 + 

 + 

 + 

 + 

 + 

 + 

 + 

 + 



-r 



+ 

 + 

 + 



+ 

 + 

 + 







}8 



A 





 



H- 

 

 

 



(") 







A 

 A 





 

 









 

 





 

 







+ 



4- 



+ 

 (•) 



(b) 



-F 

 Wi88 



4- 

 + 

 -1- 



+ 



+ 

 -f 

 4- 







i% 



A 











+ 





 

 



+ 







t 





 

 









 

 







-t- 







+ 



"T 



+ 

 -1- 

 -1- 

 + 



+ 

 -1- 

 -1- 

 + 



+ 



4- 



+ 



4- 

 4- 







iS 

 A 







4- 

 4- 

 

 

 

 4- 







A 

 A 







(?) 

 (?) 





 







(•) 









do 



do - 



Glucose agar 



+ 

 4 

 4 



do 



do 



4 



Plain agar . 



-t- 



Litmus-lactose agar 



... do 



4- 

 4- 



do 



Litmus-lactose broth fer- 

 mentation tube 



+ 

 4- 



do 



+ [ 



do-..- 



4- I 



Bile-Iactose-litmus fer- 

 mentation tube 



+ 



do 



do 



Plain agar plate* 



4- 



4- 





























* 6 or more. 



•> Many colonies present. 



" From 100 to 200 colonies. 



SUght. 



' Neutral. 



' Three days at room temperature. 236 colonies. 



