MEDICAL SURVEY OF THE TOWN OF TAYTAY. 



III. BACTERIOLOGICAL ANALYSES OP THE WATER SUPPLY. 



By Moses T. Clegg. 

 {From the Biological Lahoratory, Bureau of Science, Manila, P. I. 



The geologic conditions governing the water supply will be found in 

 the article by Adams on page 211. 



Well number 1, dug in alluvium, G and 

 Fourth Streets. (Washing water.) 

 Number of bacteria per cubic centi- 

 meter, 5,000; 

 Bacillus coli communis ; 

 Vibrios ; 



Amoebae and flagellata. 

 Well number 2, dug in tuff, H and 

 Third Streets. ( Washing water. ) 

 Number of bacteria per cubic centi- 

 meter, 8,000; 

 Bacillus coli eoniniunis; 

 Bacillus pyocyaneus; 

 Vibrios ; 



Amoebae and flagellata. 

 Well number 3, dug in alluvium, M and 

 Third Streets. (Washing water.) 

 Number of bacteria per cubic centi- 

 meter, 12,000 ; 

 Bacillus coli communis ; 

 Vibrios ; 



Amoebae and flagellata. 

 Well number 4, dug on the bank of a 

 stream, H and Fith Streets. (Wash- 

 ing water.) 



Number of bacteria per cubic centi- 

 meter, 7,800; 

 Amoebae and flagellata ; 

 Vibrios. 

 Well number 5, dug in alluvium, G, 

 Fourth and Fifth Streets. (Wash- 

 ing water.) 



Number of bacteria per cubic centi- 

 meter. 4,800; 

 Amoeba", and flagellata; 

 Vibrios. 



Well number 6, issuing from tuff. 

 ( Spring drinking water. ) 

 Number of bacteria per cubic centi- 

 meter, 500; 

 Flagellata. No amoebae. 

 Well number 7, dug in tuff. (Drinking 

 water. ) 



Number of bacteria per cubic centi- 

 meter, 800; 

 Amoebae and flagellata. 

 Well number 8, dug in a stream bed, 

 "Pinagsalan." (Drinking water.) 

 Number of bacteria per cubic centi- 

 meter, 4,000; 

 Amoebae and flagellata ; 

 Vibrios. 

 Well number 9, dug in a stream bed. 

 (Drinking water.) 

 Number of bacteria per cubic centi- 

 meter, 3,800; 

 Bacillus coli communis; 

 Amoebae and flagellata ; 

 Vibrios. 

 Well number 10, dug in tuff, "Capt. 

 Luis." (Drinking water. ) 



Number of bacteria per cubic centi- 

 meter, 800; 

 Amoebae and flagellata ; 

 Vibrios. 

 Well number 11, dlig in the bed of a 

 stream, "Manining." ( Drinking 

 water. ) 



Number of bacteria per cubic centi- 

 meter, 12,000; 

 Bacillus coli communis; 

 Bacillus pyocyaneus. 

 AmoebiP and flagellata. 



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