NOTES 175 



66. (p. 99). WEHMER, Untersuchungen iiber die Faulnis der Fiuchte, in Beitragen zur 



Kenntnis einheimischer Pilze, 2. Heft, Jena 1895. 



67. (p. 100). SELMI in Sitzungsber. d. Akad. zu Bologna, 1872 and 1873 ? also Alcaloidi 



cadaveric!, Bologna 1881. BRIEGER, Ueber Ptomaine, Berlin 1885-86, Unter- 

 suchungen iiber Bakteriengifte in Berliner klinische Wochenschrift, 1890, and 

 many other essays. See also KOBERT, Lehrbuch der Intoxikationen, 1893. 



68. (p. 100). HOPPE-SEYLER, Ueber die Einwirkung von Sauerstoff auf die Lebens- 



thatigkeit niederer Organismen, Zeitschr. f. physiol. Chemie, 1884, vol. viii. 

 NENCKI, Ueber den chemischen Mechanismus der Faulnis, Journal f. prakt. 

 Chemie, vol. xvii. BlENSTOCK, Ueber die Bakterien der Faeces, Zeitschr. 

 f. klinische Medicin, vol. viii. HERFELD, Die Bakterien des Stalldiingers und 

 ihre VVirkung, Centralbl. f. Bakt., 2. Abt. vol. i, 1895. 



69. (p. 101). WOLLNY, Die Zersetzung der organischen Stoffe und die Humusbildungen 



mit Riicksicht auf die Bodenkultur, Heidelberg 1897. 



70. (p. 101). Morphology of putrefactive bacteria is treated especially by: COHN, 



Beitrage z. Biol. vol. i, 1872 ; HAUSER, Ueber Faulnisbakterien und deren 

 Beziehungen zur Septikamie, Leipzig 1885; BIENSTOCK (note 68); KUHN, 

 Morphol. Beitrage zur Leichenfaulnis, Archiv f. Hygiene, vol. xiii, 1891. 

 Details as to saprogenic power (particularly the formation of indol) of patho- 

 genic bacteria are given in many medical treatises : see the works of FLUGCE 

 and LEHMANN and NEUMANN (note 3). 



71. (p. 103). PASTEUR and JOUBERT, Sur la fermentation de 1'urine. Comptes rendus der 



Pariser Akad. 1876, vol. Ixxxiii. MlQUEL, P., ittude sur la fermentation ammonia- 

 cale et sur les ferments de 1'uree. Annales de micrographie, 1889-1893, 

 vols. i-iii, v. In MlQUEL'S works there are very full descriptions of the distri- 

 bution, species, and functions of the numerous urine bacteria (good references 

 in A. KOCH'S Jahresbericht, vols. i, ii, and iv). 



72. (p. 104). The numerous papers of WARINGTON, MiJNTZ and others on nitrification 



have contributed much to our knowledge of the problem, but the key was first 

 given by WINOGRADSK.Y, Recherches sur les organismes de la nitrification, i e ~5 e 

 memoire, 1889-1891, Annales de 1'Institut Pasteur iv, v, and Contributions 

 a la morphologic des organismes de la nitrification, Archives de sciences biol. 

 publ. par 1'Inst. imper. de med. exper. a St. Petersbourg, i, 1892 : also Zur 

 Mikrobiologie des Nitrifikationsprozesses, Centralbl. f. Bakt., 2. Abt. ii, 1896. 

 Quite recently STUTZER and HARTLEB have published new observations on the 

 saltpetre ferment (Centralbl. f. Bakt., 2. Abt. iii, 1897). These observations may 

 well lead astray those not familiar with mycology. The bacteria are said to 

 grow out into a mycelium, and give rise to a whole host of different forms 

 a lapse back into the wildest traditions of p'eomorphism. STUTZER and 

 HARTLEB'S work is insufficient and full of faults, and is wanting entirely in 

 reliable evidence. Such statements as theirs ought not to have appeared after 

 BREFELD'S work was once known. The real ' saltpetre bacteria ' are and 

 remain bacteria, and the reader may rely on their constancy. 



73. (p. 106). GODLEWSKI, Ueber die Nitrifikation des Ammoniaks und die Kohlenstoff- 



quellen bei der Ernahrung der nitrificierenden Fermente. (Polish.) Referred 

 to in Centralbl. f. Bakt, 2. Abt. ii. p. 458. 



74. (p. 106). BURRI and STUTZER, Ueber Nitrat zerstorende Bakterien und den durch 



dieselben bewirkten Stickstoffverlust, Centralbl. f. Bakt., 2. Abt. i, 1895. 



