230 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Loftier bacillus, and at the same time retards the growth of associated 

 bacteria. The medium being transparent permits the early recognition 

 of the diphtheria colonies. 



Nutrient medium III. inhibited the growth of all tho organisms 

 experimented with. 



It may be mentioned that the leading principle of Deycke's medium 

 is the conversion of the albumen in the meat, used in preparing 

 ordinary gelatin and agar, into alkali-albumen by means of caustic 

 soda. In nutrient medium L, further conversion into peptone is secured 

 by the action of pepsin. In nutrient media Ila, lib, and lie, trypsin 

 also is employed and albumoses thereby formed as the result of artificial 

 digestion for periods of 6, 24, or 48 hours (i.e. Ila, 116, and lie re- 

 spectively). In nutrient medium III. the dissolved alkali-albumen is 

 treated with pancreatin. 



Bibliography. 



Bdist, J. B. — Recent Advances in our knowledge of some Pathogenic Micro- 

 organisms. Proc. Scot. Micr. Soc, III. (1900-1) pp. 57-72. 



Lafar, F. — Technical Mycology. 



Fischer, Jena, 1901, first third of vol. 2, with 68 figs. 



Miquel, P., et Cam bier, R. — Traite de Bacteriologie pure et appliquee a la 



Medecine et a l'Hygiene. C. Naud, Paris, 1901, 1059 pp. and 224 figs. 



Schmidt, J. u. F.— Die Bacterien. Fischer, Jena, 1902,410 pp. and 205 figs. 



