JAV. 1908.1 SAn'O.—FOEMOSAN FERMENTATION ORGANISMS. 



11 



well with all the properties of Rhizopus oligosporus,^^ that it 

 appears, that the two forms may belong to one species. 



As for the behaviour of this fungus towards carbohydrates, 

 I have adopted the Lindner's fermentation test, and at the 

 same time compared it with Rhizopus oligosporas and Chlamy- 

 domucor Oryzae. I have here to express my thanks to Prof. 

 Went, of Utrecht, who kindly provided me w^ith the living 

 specimen of the latter species. The results observed were as 

 follows :— 



(4-4- and + denote strong and weak gas productiuu respectively, and — 

 entire absence of it.) 



The coincidence of gas production between the " Shiro-koji " 

 fungus and Rhizopus oligosporus in the above table indeed 

 renders it very likely that the two forms may be referred to 

 one species. It is peculiar that they cannot ferment saccharose 

 and also that, as indicated by the usual method of enzyme-proof, 

 the invertase is not secreted by them. Chlamydomucor 

 Oryzae, however, can easily ferment as well as invert saccharose. 

 Although I have hitherto considered Rhizopus oligosporus as a 



1) Centralbl. f.^Bakt., Alt. II, Bd. XIV, 1905, No. 18/20. p. G23. 



