SACCH AROMYCETES. 



Yeast Fungi. The yeast plants are a low order of fungi, 

 which reproduce by budding in place of spores, and are the 

 active agents of fermentation. The raising of bread dough, 

 the manufacture of beer, and even the acetic fermentation for 

 vinegar, is all owing to this fungus. 



The mucidine fungus, Penicillium crustaceum, is supposed 

 to produce the myceloid condition called the mother of vinegar 

 (Mycodermo aceti). For the species of this group consult 

 Grove's synopsis of " Bacteria and Yeast-plant." 



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