[From the Bulletin of the New York Botanical Garden, Vol. 3, No. 9. 1903.] 



The Flora of the Matawan Formation (Crosswicks Clays). 



By Edward W. Berry. 



Introduction. 

 Some of the earliest of American geological writings refer 

 to the New Jersey Cretaceous, and the accessibility of this 

 area has ever since made it a favorite field for investigation. 

 Interest for a long time centered about the marl deposits and 

 those of the plastic clays because of their economic impor- 

 tance ; the present Matawan formation was included in the 

 *' plastic clay and sand formation" of the geologists of the 

 first half of the nineteenth century, and their stratigraphic posi- 

 tion was considered to be Lower Cretaceous by Rogers in his 

 first report published in 1840, although they were not clearly 



