THE STRUCTURE OF BACTERIA. 41 



group. Lately Juhler x claims to have dis- 

 covered that the mould concerned in the sake 

 fermentation develops bud-like forms which 

 produce endospores, and A. Jorgensen 2 main- 

 tains that one of the wine-yeasts, a true endo- 

 spore-forming variety, is merely a stage in 

 the life-cycle of a mould, which, upon alkaline 

 media, grows in the semblance of the mould 

 Chalara, and upon acid media in that of De- 

 matium. In similar fashion L. Klein looked 

 upon the arthrosporous bacteria as degenerate 

 Schizophytes, as Cyanophycetz indeed, which 

 had lost their chlorophyl and become sapro- 

 phytic. It is true he abandoned this view after 

 Hueppe had demonstrated the ability of color- 

 less microbes to assimilate carbon dioxide and 

 thus to exist like true plants, a point to which 

 I shall return presently. 



There are cogent reasons for accepting the 

 opinion that still a third group of quite differ- 

 ent phylogenetic value should be recognized 

 among the organisms hitherto classed as bac- 

 teria. In cultures of the ray-fungus true 

 coccus and rod-forms occur which appear like 

 undoubted bacteria. Since, however, the 

 method of branching of the filaments is not 



1 Centralbl. f. Bakt. Abth. II., I., 1895, p. 16, p. 326. 



2 Centralbl. f. Bakt. Abth. II., I., 1895, p. 321. See also Klocker 

 and Schioning, Annal. de Microg., IX., 1897, Nos. 6-8. 



