I3 8 REFERENCES. 



POUJOL, M. G. 1897. Sur la presence tres frequente du Bacterium 

 coli dans les eaux naturelles. Comptes rendus de la Societe de 

 Biologic, IV, 982. 



PRAUSNITZ, W. 1890. Der Einfluss der Miinchener Kanalisation 

 auf die Isar mit besonderer Beriicksichtigung der Frage der 

 Selbstreinigung der Fliisse. Munich, 1890. 



PRESCOTT, S. C. 1902. a. On the Apparent Identity of the Cul- 

 tural Reactions of B. coli communis and certain Lactic Bac- 

 teria. Science, N. S., XV, 363. 



PRESCOTT, S. C. 1902. b. A Note on Methods of Isolating Colon 

 Bacilli. Science, N. S., XVI, 671. 



PRESCOTT, S. C. 1903. On Certain Precautions Required in 

 Making and Interpreting the so-called "Colon Test" for Po- 

 table Waters. Medicine, XI, 20. 



PRESCOTT, S. C., and BAKER, S. K. 1904. The Cultural Rela- 

 tions of Bacillus coli and Houston's Sewage Streptococci, and 

 a Method for the Detection of these Organisms in Polluted 

 Waters. Journal of Infectious Diseases, I, 193. 



PRESCOTT, S. C. See SEDGWICK, W. T. 



PROCACCINI, R. 1893. Influenza della luce solare sulle acque di 

 rifiuto. Annali dell' Istituto d'Igiene Sperimentale di Roma, 

 HI, 437- 



PUSCH, H. See PETRUSCHKY, J. 



RAPP, R. 1903. Ueber den Einfluss des Lichtes auf organische 

 Substanzen mit besonderer Beriicksichtigung der Selbstreini- 

 gung der Fliisse. Archiv. fur Hygiene, XL VIII, 179. 



REFIK. 1896. Sur les divers types de coli-bacille des eaux. An- 

 nales de 1'Institut Pasteur, X, 242. 



REINSCH, A. 1891. Zur bakteriologischen Untersuchung des 

 Trinkwassers. Centralblatt fur Bakteriologie, X, 415. 



REMLINGER, P., and SCHNEIDER, G. 1897. Contribution a PEtude 

 du bacille typhique. Annales de PInstitut Pasteur, XI, 55. 



REYNOLDS, A. R. 1902. Report of Streams Examination, Chemic 

 and Bacteriologic, of the Waters between Lake Michigan at 

 Chicago and the Mississippi River at St. Louis, for the purpose 

 of determining their condition and quality before and after the 

 Opening of the Drainage Channel. Chicago, 1902. 



