120 



24. Clark, W. M. and Cohen, Barnett, 1918. Influences of the PH of media upon 



the reproduction of some common bacteria. Abs. Bact., II., 10. 



25. Clark, W. M., Lubs, H. A., Rogers, L. A., 1918. Characteristics of bacteria of 



the colon type occurring in human feces. J. Bact. Ill, 231-52. 



26. Clark, W. M. and Lubs, H. A., 1919. The colorimetric determination of the 



hydrogen-ion concentration and its application in bacteriology. J. Bact. II., 

 1 and 109. 



27. Clemesha, W. W., 1912. Bacteriology of surface waters in the tropics. The 



Calcutta and London. 



28. Clemesha, W. W., 1912. A Criticism of Dr. A. C. Houston's report on the bi- 



ological characters of B. coli isolated from (1) raw, (2) stored river water, 

 and (3) stored and filtered water. J. Hyg. XII., 463. 



29. Cohen, B. and Clark, W. M., 1919. The growth of certain bacteria in media 



of diffrent hydrogen-ion concentrations. J. Bact. IV., 409. 



30. Copeland, W. R. and Hoover, C. P., 1911. The interpretation of tests for B. coli 



communis. J. Infect. Dis. IX., 343. 



31. Creel, R. H., 1914. Examination of drinking water on railway trains. Bull. 100, 



Hyg. Lab. Wash. 



32. Gumming, H. S., 1916. Investigations of the pollution and sanitary conditions 



of the Potomac river water shed. Bull. 104, Hyg. Lab. Wash. 



33. De Bord, Geo. G., 1917. The fuchsin aldehyde reaction on the Endo medium. 



J. Bact. II., 309-314. 



34. Dolt, M. L., 1908. Simple synthetic media for the growth of B. coli and for 



its isolation from water. J. Infect. Dis. V., 616. 



35. Durham, H. E., 1901. Some theoretical considerations upon the nature of ag- 



glutinis, together with further observations upon Bacillus typhi abdominalis, 

 Bacillus enteritidis typhi abdominalis, Bacillus enteritidis, Bacillus coli com- 

 munis, Bacillus lactis aerogenes, and some other Bacilli of allied character. 

 J. Exper. Med. V., 353. 



36. Dyer, H. G. and Keith, Jr. S. C., 1893. Notes on Normal intestinal Bacilli of 



the horse and of certain other domesticated animals. Tech. Quarterly, VI., 

 256-257. 



37. Darling, Chester A., 1919. Characteristics of the colon type of bacteria found 



in feces. Am. J. Pub. Health, Concord, IX., 884. 



38. Eijkmann, 1904. Die Garungs probe bei 46<> als Hilfsmittel bei Trinkwasser 



untersuchung. Central. Bakteriol. Orig. XXXVII., 74. 



39. Ellms, Joseph W., 1920. Report of experiments on the purification of the water 



supply of Milwaukee, Wisconsin. 



40. Endo, S., 1903-4. Ueber ein Verfahren zum Nachweis der Typhus-bacillen. 



Centralb. f. Bakt. I. Abt. XXXV., 109. 



41. Escherich, J., 1885. Die Darmbakterien des Neugeborenen und Sauglings. 



Fortschr. der Med. III., 515, 547. 



42. Ewing, C. Leroy, 1919. Presence of a spore bearing aerobic gas forming bacillus 



in Baltimore city drinking water. Am. J. Pub. Health, XX., 257-8. 



43. Ferreira, A., Horta, A., and Paredes, C., 1908. Recherches sur le B. coli de 



1'intestine des manniferes et des oiseaux. Archives do Real Institute Bacter- 

 iologico Camara Pestana, Tome II, Facs. II, 203. 



44. Ferreira, A., Horta, A., and Paredes, C., 1908. Recherches sur le B. coli com- 



munis de 1'intestin de I'homme. Archives do Real Institute Bacteriologico 

 Camara Pestana, Tome II, Fasc. II, 153. 



45. Fitzgerald, J. G., 1914. A biometrical study of the mucosus capsulatus group. 



J. Infect. Dis. XV., 208-78. 



46. *Flint, J. M., 1896. Notes on the distribution of Bacillus coli communis. J. 



Am. Med. Assn. XXVL, 410-411. 



47. Ford, W. W., 1903. The classification and distribution of the intestinal bacteria 



in man. Studies from the Royal Victoria Hos^ al I, also studies from the 

 Rockefeller Institute for Medical Research I T 



48. Frost, W. H., 1916. Confirmation tests for . coli in routine water. Am. J. 



Pub. Health, VI., 585-8. 



