192 



MICRO-ORGANISMS AND DISEASE. [CHAP. 



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. 113. SACCHAROMYCES MYCODERMA, OR OIDIUM ALBICANS. 



(After Grawitz.) 

 From an artificial cultivation in dilute nourishing material. 



d. Branched mycelium. 

 fa. Torula stage. 

 //3. Mycelial stage. 



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 



1 Nageli, see chapter viii. 2. 



