MxiRYLAND GEOLOGKAL SURVEY, 



PRINCE GEOItGE S COITNTY. PLATE III. 



f m fc^ ^M PM m CENTIMETERS I 



View showing Silicified Cycad Trunk. Cycndeoidea marylandica (Fontaine), Cap. and 



Solms., FROM THE PaTUXENT FORMATION OF PrINCE GeOHGE'S CoUNTY. 



