References. 219 



Brown, C. C. 1893. Fourth Report on Mohawk and Hudson 

 Rivers. Thirteenth Annual Report of the State Board of Heahh 

 of New York for 1892, 680. 



Beuns, H. See Levy, E. 



BucHNER. 1893. Ueber den Einfluss des Lichtes auf Bakterien 

 und iiber die Selbstreinigung der Fliisse. Achiv fiir Hygiene, 

 XVII, 179. 



BuRsi, R. 1895. Nachweis von Fakalbakterien im Trinkwasser. 

 Hygienische Rundschau, V. 49. 



Calmette, a. 1905. Recherches sur I'^puration biologique et 

 chimique des eaux d'^gout effectufes a I'institut Pasteur de 

 Lille et a la station expdrimentale de la Madeleine, i. 



Calmette, A. 1907. Recherches sur I'dpuration biologique et 

 chimique des eaux d'dgout efFectu&s a I'institut Pasteur de 

 ille et S. la station exp&imentale de la Medeleine. II. 



Cambier, R. See Miqtjel, P. 



Chick, H. 1901. The Distribution of Bacterium coli commune. 

 The Thompson- Yates Laboratories Report, III, i and 117. 



Christian. 1905. Zum Nachweis fakaler Verunreinigung von 

 Trinkwasser. Archiv fiir Hygiene, LIV, 386. 



Clark, H. W., and Gage, S. DeM. rpoo. The Significance of 

 the Appearance of B. Coli communis in Filtered Water. Journal 

 of the Boston Society of Medical Sciences, IV, 172. 



Clark, H. W., and Gage, S. D. 1905. The Functions of Various 

 Types of Bacteria in the Purification of Sewage, with some 

 Methods for their Quantitative Determination. Engineering 

 News, Lni, 27. 



Clark, H. W. 1906. Experiments upon the Purification of Sewage 

 and Water at the Lawrence Experiment Station during the 

 Year 1905. Thirty-seventh Annual Report of the State Board 

 of Health of Massachusetts for 1905. 



