BACTERIA IN WATER. 1/3 



SEVERIN. Cent. f. Bact. u. Par., II., I., 1895, p. 97, and II., III., 1897, 



p- 54- 



WEISSENBERG. Arch. f. Hyg., XXX., 1897, P- 2 74- 

 WOLF. Hyg. Rund., IX., 1899, p. 538 and 1169. 



NITRIFICATION. 



BURRI. Cent. f. Bact. u. Par., II., I., 1895, pp. 22, 80. 

 FRANKLAND. Phil. Trans., 1890, p. 107. 

 MIGULA. Cent. f. Bact. u. Par., II., VI., 1900, p. 365. 

 OMELIANSKI. Cent. f. Bact. u. Par., II., V., 1899, p. 537. 

 SCHLOSSING and MiJNZ. Comp. Rend., 86, 1878 and 89, 1879. 

 WARRINGTON. Jour. Chem. Soc., 1891, p. 484. 

 WARRINGTON. On Nitrification, 1890-1891. 



WINOGRADSKY. Ann. d. 1'Inst. Past., IV. and V., 1890 and 1891. 

 WINOGRADSKY. Cent. f. Bact. u. Par., II., II., 1896, p. 415. 

 WINOGRADSKY and OMELIANSKY. Cent. f. Bact. u. Par., II., V., 1899, pp. 



329, 377, 429- 



MANURE. 



BURRI, HERFELDT and STUTZER. Jour. f. Landw., 1894, p. 329. 

 DIETZELL. Land. Vers. Sta., XLVIIL, 1897, p. 163. 

 HERFELDT. Cent. f. Bact. u. Par., II., I., 1895, p. 74. 

 SEVERIN. Cent. f. Bact. u. Par., II., I., 1895, P- 799- 



SEWAGE. 



CRIMP. Sewage Disposal Works, London. 

 MARSTON, WEEMS and PAMMEL. Proc. Iowa Engin. Soc., 1900. 

 RAFTER and BAKER. Sewage Disposal in United States. New York, 1894. 

 Reports of Mass. State Board of Health, 1897 to 1900. 



FIXATION OF NITROGEN BY BACTERIA IN THE SOIL. 



STOKLASA. Cent. f. Bact. u. Par., II., V., 1899, p. 350, also VI., 1900, pp. 

 22 and 708. 



STOKLASA and VITEK. Cent. f. Bact. u. Par., II., VII., p. 257. 



STUTZER and HARTLEB. Cent. f. Bact. u. Par., II., IV., 1898, pp. 31, 73. 



LAUCK. Cent. f. Bact. u. Par., II., V., 1899, p. 20. 



KRUGER and SCHNEIDENWIND. Land. Jahr., XXVIII., 1899, p. 579. 



WINOGRADSKY. Comp. Rend., 116, 1893. Also Arch. Sci. Biol. de St. 

 Peters., III., 1895. 



FIXATION OF NITROGEN BY LEGUMES. 



ATWATER and WOODS. Am. Chem. Jour., XIII., 1891, p. 42. 



BEYERINCK. Bot. Zeit., XLVI., 1888 und 1890. 



GONNKKMANN. Land. Jahr., XXIII. , 1894, p. 649. 



HILTNER. Land. Vers. Sta., XLVI., 1895, p. 153. 



HILTNER. Cent. f. Bact. u. Par., II., VI., 1900, p. 273. 



