ilARYLAXD GEOLOGICAL SUUVEY 



147 



cowpeas. Such a treatment would not only increase the actual supply 

 of plant food but would also improve the texture of the soil. Unless 

 it is absolutely necessary that tobacco should be raised upon areas of 

 this type, the application of lime should be tried in connection with 

 stable manures and green fertilizers. The fact that tobacco is not largely 

 raised on this soil should make this line of improvement much easier 

 than on other types of soil to which tobacco is one of the crops best 

 adapted. 



The present production of wlieat and corn on the I.eonardtown loam 

 is scarcely equal to the average of the county, and large areas of the 

 formation are left to forest occupation, furnishing only scanty pas- 

 turage for a few head of stock. The soil is capable of considerable 

 improvement and should be cleared and farmed according to modern 

 methods, especially in the production of grain and forage crops. 



Mechanical Analyses of Leonardtown Loam. 



The Susquehanna Gravel. 



About six square miles of territory in Calvert County are occupied 

 by distinctly gravelly soil. Tlie gravels usually appear on slopes in 

 narrow bands and in isolated patches, but near Adelina and about one 

 mile east of Ferry Landing considerable areas of upland are occupied 



