TO 



PROF. HEmRICH ROBERT GOEPPERT, M.D., 



DIRECTOR OF THE BOTAXIC GARDEN, ERESLAU ; 



ONE OF THE MOST EMINENT PALiEONTOLOGICAL 

 BOTANISTS OF EUROPE, 



Ei}t foUotoms treatise 



IS DEDICATED, WITH BEST RESPECTS, BY HIS 

 OBLIGED FRIEND 



THE AUTHOR. 



