72 Synopsis of the Bacteria and Yeast Fungi. 



J. Haberkorn (Botan. Centralblatt, x., 1882, p. 100) 

 puts forward the opinion that all Cohn's four tribes are 

 forms of a single large genus with numerous species, which 

 show alternations of generations and pleomorphy. 



W. Zopf ("Zur Morphologic der Spaltpflanzen," 1882) 

 adduced further evidence to prove the truth of the view 

 that all the genera of the Schizomycetes described by Cohn 

 and others, are simply stages of development dependent 

 upon nutrition. 



W. Miller (Archiv fur exp. Pathol. und Pharmak., 

 xvi., 1882, p. 296) states that he observed transitional forms 

 between Leptothrix buccalis and other genera, viz. coccus, 

 bacillus, and spiral forms; and again (Berichte Deutsch. 

 Bot. Gesell., i., 1883, pp. 221-224) he traced the growth of a 

 Leptothrix from the teeth of a dog into forms more or less 

 resembling Bacterium, Micrococcus, Spirillum, and Spiro- 

 chseta. 



H. Kurth (Berichte Deutsch. Bot. Gesell., i., 1883, pp. 

 97-99) not only traced the growth of his Bacterium Zopfii 

 from leptothrix into rod and coccus forms, but also 

 determined the conditions under which one or the other 

 is produced the rods being the vegetative and the coccus 

 the resting stage. 



H. Zukal (Osterr. Bot. Zeitschrift, xxxiii., 1883, p. 73) 

 connects Bacillus subtilis, not only with Leptothrix parasitica, 

 but also with the Algae L. muralis and Drilosiphon Julianus, 

 Zuk. These observations seem to be founded upon errors. 



E. Klein (Quart. Jour. Micr. Sa'., 1883, p. 260) 

 describes a torula-like variety of Bacillus anthracis, which 

 passed, sometimes even upon the same filament, into the 

 typical Bacillus. Similar forms of Bacteria have been 

 described by many others. Klein's growth, however, judg- 

 ing from his figures, does not resemble a true Saccharo- 



