474 



MICRO-ORGANISMS AND DISEASE [cilAr. 



be confounded with mycoderma aceti} which is a bacterium 

 and the efficient cause of acid fermentation in wine and 

 beer. 



The saccharomyces mycoderma does not grow well in the 

 depth of liquids, but when sown into a liquid of acid re- 

 action and containing but little sugar Cienkowsky saw the 



Fig. 



-SaCCH.^KO.MVCKS MYCODEKM.A, ok OlUlL'M AT.r.lC.ANS. 



(.Vfter Giawit/.) 



From an artificial culti\'ation in dilute nourishing material. 



d. Branched mycelium. 

 fo.. Torula stage. 

 f^. Mycelial st.agc. 



cells elongating into cylindrical elements ; each of which by 

 gemmation produced a new cell which also elongated, and 

 so on till a linear series of cylindrical cells was formed, 

 separated from one another only by a thin septum ; a mass 

 of filaments very much resembling a mycelium was thus 



' Nagcli, see chapler viii. 2. 



