354 EDWARD W. BERRY 



petrified wood that is closely related to if it is not true witch 

 hazel wood (Hamamelidoxylon) has been described from the mid- 

 Cretaceous of France and flowers (Hamamelidanthium) are pre- 

 served in the Baltic amber (Lower Oligocene). Finally unmis- 

 takable witch hazel leaves occur in the Pliocene of the Auvergne 

 (Cantal) so that we know that the witch hazel was present in 

 Europe in pre-glacial times although it became entirely extinct 

 on that continent during the period of glaciation. 



