184 Lectures on Bacteria. 



1882, p. 264, and in Bullet, de la Soc. Imper. d. Nat. de Moscon, 1881. — See 

 also F. Hueppe, Ueber Zersetzungen d. Milch, &c., in Bomer's Deutscher 

 med. Wochenschrift, 1884, No. 48. — W. Podwyssotzki (Sohn"), Kefyr, kan- 

 kasisches Gahrungsferment u. Getrank, &c., translated from the Russian of 

 the 3rd Edition by Moritz Schulz, St. Petersbg., 1884. — W. N. Dimitrijew, 

 Kefir oder Kapir, echtes Kumyiss aus Kuhmilch, translated from the 

 German by E. Rothmann, St. Petersbg., 1884. — Alexander Levy, Die wahre 

 Natur des Kefir, in Deutsche medicinal Zeitnng, 1886, p. 783. Levy's 

 manner of proceeding is to add one part of ordinary sour milk to 8-10 

 parts of cold boiled milk, and then to shake the mixture at a temperature of 

 about 12 °C. 



47. P. van Tieghem, Sur le Bacillus Amylobacter, &c., in Bull. Soc. Bot. 

 de France, XXIV (1877), p. 128 ; — Id., Sur la fermentation de la cellulose, 

 in Bull. Soc. Bot. de France, XXVI (1879), p. 25. 



48. A. Prazmovi'ski, Untersuch. ii. Entwicklungsgesch. u. Fermentvrirkung 

 einiger Bacterien-Arten, Leipzig, 1880. 



49. Vandevelde, Studien z. Chemie d. Bacillus snbtilis, in Zeitschr. i. 

 physiolog. Chemie, VIII, 367. 



50. Bienstock, Ueber d. Bacterien d. Faeces, in Zeitschr. f. klin. Medicin, 

 VIII. 



51. Cohn, Beitr. I, Heft 2, p. 169. — G. Hauser, Ueber Faulnissbacterien 

 11. deren Beziehung z. Septicaemia, Leipzig, 1885. I have made little use 

 of this v?ork in the text, because I am unable sufficiently to understand its 

 morphology vifithout personal investigation. The whole of the phenomena 

 of ' pleomorphism,' on the strength of which the writer designates his forms 

 by the special generic name Proteus, an unacceptable one in any case, 

 appear to me, on comparing the figures, scarcely to deserve the appellation. 

 But the figures do not help us in determining the morphological relations, 

 at least if we go beyond the habit of the groups ; I have taken fruitless 

 pains to arrive by their means at a clear idea of the conformation of the 

 Spirilla-forms which he describes. Photography is no doubt a useful 

 assistant in microscopical studies, and I have used it myself for twenty-five 

 years ; but there are limits to its capabilities, and the details required in this 

 case are not given in Hauser's figures. With all due acknowledgment of 

 the advance made in Hauser's work, I say what I have now said in order to 

 justify my casual treatment of it. 



52. H. Nothnagel, Die normal in d. menschl. Darmentleerungen vorkom- 

 menden niedersten pflanzl. Organismen, in Zeitschr. f. klin. Medicin, III 

 (1881). — Kurth, Bacterium Zopfii, in Bot. Ztg. 1883, 369. — Miller, Ueber 

 Gahrungsvorgange im Verdauungstractus, &c., in Deutsche med. Wochen- 

 schrift, 1885, No. 49. — W. de Bary, Beitr. z. Kenntn. d. niederen Organismen 

 im Mageninhalt, in Archiv f. experim. Pathologic u. Pharmacologic, XX. 



53. The literature of Sarcina has been carefully collected by Falkenheim 

 in his paper Ueber Sarcina, published in Archiv f. experim. Pathologic, 

 XIX, p. 339- 



