MARYLAND WEATHER SERVICE 251 



The trees in the groves or wood lots of the farms, are of the same 

 varieties as have been already discussed, the several Oaks, Hick- 

 ories, Chestnut, and more rarely the Butternut and Black Walnut. 

 The amount of Hickory and White Oak is less in the region about 

 Hagerstown than to the east or south of it, because of their demand 

 at that place for the wheelwright and coopering trades. The re- 

 maining trees are thus of the less valuable species, and in culled 

 condition, as the better types have already been removed, leaving 

 only the poorest species, and of these often the poorest individuals, 

 to represent the original forest cover. 



Among the plants that have been noted in the open valley, the 

 following are common: 



Hrdeoma pulcgioides 



Dipsacus sylvestris 



Monarda fistulosa 



Si da spinosa 



Parsonsia petiolata 



Daucus carota 



RudbecJcia hirta 



Datum stramonium 



Bidens bipinnata 



Linaria linaria 



Echium rulgare 



Achillea millefolium 



Nepeta cataria 



Anihemis cotula 



Cichorium intybus 



Verbesina occidental-is 



Chrysanthemum leucanthemum 



Verbascum blattaria 



Clematis virginica. 



Conococlieague Valley. — Toward the west side of the Valley a 

 shale belt occurs which changes the general character of the soil, 

 but as the plant life is so largely that of the weed type, and to so 

 large an extent independent of soil conditions, there is little to 



