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Articles: 



JoHANNA Westerdijk. Zur Régénération der Laubmoose . 1 



W. J. JoNGMANs. Ueber Brutkôrper bildende Laubmoose . 67 



W. BuRCK. On the influence of the nectaries and other 

 sugarcontaining tissues in the flower on the opening of 

 the anthers 163 



