lî. IIKLNZI:. — SLR LA VAULVIULLrL DES MlCKO-UliliAMSMES. 'JSH 



rula) which do iiol l'ernient, Ly a similar prucesss oL successivo cultures may, 

 be easily Iransformed inlo fcrmenling- yeasls. It is diflicult to setLie Ihe f|ues- 

 lion whether lliis fermcnlalivo power is really an acquired charai.'lt'r, or wiirllicr 

 it existed alrcady in a latent condition. 



Tho autlior gives further instances ol' the influence of dilTerent culturr 

 inedia on Ihc green aigu, and on Bacillus ])r<idigiu!iiis andB. cijaniKjcnio^. Frum 

 experimcnls ol" Dr. Heinze as well as from those of other workers, the loss of 

 certain characters, as well as the acquisition of new charactcrs giving risc to 

 nevv varielies and races, may be recorded «illi corlainly. Tliesc characlcrs 

 niay be Iransmilted for niany générations. 



IV' coNFi;[L i.\i^:it.\ 



