NOTES 17; 



66. (p. 99). Wehmer, Untersuchungen iiber die Fiiulnis der Friichte, in Beitragen zu 



Kenntnis einheimischer Pilze, 2. Heft, Jena 1895. 



67. (p. 100). Selmi in Sitzungsber. d. Akad. zu Bologna, 1872 and 1873 ; also Alcaloid 



cadaverici, Bologna 1881. Brieger, Ueber Ptomaine, Berlin 1885-86, Unter 

 suchungen iiber Bakteriengifte in Berliner klinische Wochenschrift, 1890, an< 

 many other essays. See also Robert, 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. Bienstock, Ueber die Bakterien der Faeces, Zeitschr 

 f. klinische Medicin, vol. viii. Herfeld, Die Bakterien des Stalldiingers unc 

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



69. (p. 101). Wollny, Die Zersetzung der organischen Stoffe und die Humusbildungei 



mit Rucksicht 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 derei 

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

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

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

 genie bacteria are given in many medical treatises : see the works of FLUGGl 

 and Lehmann and Neumann (note 3). 



71. (p. 103). Pasteur and Joubert, Sur la fermentation de l'urine. Comptes rendus de 



Pariser Akad. 1876, vol. lxxxiii. MlQUEL, P., Etude sur la fermentation ammonia 

 cale et sur les ferments de Puree. Annales de micrographie, 1889-1893 

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

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

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



72. (p. 104). The numerous papers of Warington, Muntz and others on nitrificatioi 



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

 given by WlNOGRADSKY, Recherches sur les organismes de la nitrification, i e -5 

 me"moire, 1889-1891, Annales de l'Institut Pasteur iv, v, and Contribution; 

 a la morphologie des organismes de la nitrification, Archives de sciences biol 

 publ. par l'lnst. impeY. de me"d. expdr. a St. P&ersbourg, i, 1892 : also Zu 

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

 Quite recently Stutzer and Hartleb have published new observations on thi 

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

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

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

 — a lapse back into the wildest traditions of pleomorphism. Stutzer ant 

 Hartleb's work is insufficient and full of faults, and is wanting entirely ii 

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

 BREFELD's work was once known. The real ' saltpetre bacteria ' are anc 

 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.) Referrec 

 to in Centralbl. f. Bakt, 2. Abt. ii. p. 45 8 - 



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



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



