204 THE PLANT LIFE OF MARYLAND 



Near Principio, in Cecil County, a tract was examined in which 

 the Chestnut was uncommon, and the bulk of the stand was made 

 up of Oaks, with the Chestnut Oak in the lead. The percentages 

 were as follows: 



Chestnut Oak 35% 



Black Oak 20% 



Scarlet Oak 18% 



White Oak 10% 



Swamp Oak 6% 



Chestnut 6% 



Mockernut Hickory 4% 



A recapitulation of the percentages of species in six of the most 

 typical stands examined on Cecil loam and Cecil mica loam in Cecil 

 and Harford counties is as follows: 



Chestnut 24% 



Black Oak 18% 



White Oak 15% 



Mockernut Hickory 10% 



Chestnut Oak 9% 



Pignut Hickory 6% 



Scarlet Oak 6% 



Tulip Tree 5% 



Swamp Oak 2% 



Beech 2% 



Miscellaneous 3% 



The predominance of the Chestnut is, as stated before, no doubt 

 unnatiiral, although it must always have been an important tree in 

 the forest make-up. The White Oak and the Mockernut Hickory 

 are the species which typify the deepest soils and the finest timber 

 tracts of to-day (as at Glenville). The Chestnut Oak and Scarlet 

 Oak are species more capable of enduring adverse soil conditions, 

 as witness the abimdance of the former on rocky slopes and the 

 gravel hills, and of the latter on the stony hills of the Upper Mid- 

 land District. 



The Tulip Tree is not an infrequent component of the topland 

 forest, and also the Beech, although both these species are much 

 more abundant on the soil-covered slopes. Red Maple and Swamp 

 Oak, although occasional in topland forest are most frequent on 

 flood plains, the latter being particularly characteristic of poorly 

 aerated and acid soils here as well as elsewhere in the state. 



