PAGE 



Vegetation of the Cecil Clay 212 



Topland 212 



Vegetation of the Serpentine Barrens 213 



Vegetation of the Susquehanna Gravel 215 



Conclusions 218 



THE ECOLOGICAL PLANT GEOGRAPHY OF MARYLAND, MID- 

 LAND ZONE. UPPER MIDLAND DISTRICT. By Frederick H. 



Blodgett 221 



Introductory 221 



Parr's Ridge Area 221 



Vegetation of Hills 222 



Vegetation of Roadsides 224 



Vegetation of Valleys 224 



Cultivated Areas 226 



Drainage 226 



Upper Monocacy Valley • 228 



Bottoms 22!) 



Woodlots 231 



Blue Ridge Area 231 



The Gentler Slopes 232 



The Steeper Slopes 233 



Thurmont 233 



Catoctin 235 



Point of Rocks 236 



Sugar Loaf Mountain 237 



Bog Pockets 238 



The Middletown Valley 240 



The Blue Ridge Axis 241 



Elk Ridge 242 



The Main Axis 245 



Roadsides 245 



Moist Areas 246 



Boulders 248 



Hagerstown Valley 250 



Cavetown 250 



The Valley Floor 250 



Conococheague Valley 251 



Williamsport 252 



