MARYLAND GEOLOGICAL SURVEY 



301 



TABLE SHOWING THE RELATIVE ABUNDANCE OF DIFFERENT SPECIES 



IN THE SHORE TIMBER. 



Average of 82 acres. Trees 5 inches and over in diameter breast high. 



Average Average 



Average Percentage diameter stand 



number of of each breast high. per acre 



Species. trees per acre. species. Inches. Cords. 



Chestnut 24 18 14 3.64 



Red and Black Oaks 18 14 15 2.76 



Chestnut Oak 10 8 16 2.04 



White Oaks 8 6 17 1.81 



Tulip-tree 8 6 14 .81 



Other species 65 48 11 3.93 



Average of all species 133 100 13 14.99 



NOTE. 

 Red and Black Oaks 



include : Red, Scarlet, Yellow, Spanish, Pin, Black Jack, Willow, and 

 Bartram Oaks. 

 White Oaks 



include : White, Post, Swamp White, and Cow Oaks. 

 Other species 



include : Red Cedar, Pitch Pine, Scrub Pine, Black Cherry, Mockernut, 

 Pignut and Bitternut Hickories, Basswood, Locust, Beech- 

 Sycamore, River Birch, Red Maple, Black Gum, Sweet Gum, 

 White Willow, Red Mulberry, Persimmon, Butternut, Dog- 

 wood, Sassafras, Laurel, Blue Beech, and Redbud. 



The grouping of commercial trees with inferior species in the tables 

 is due to the fact that they occur in such small numbers on the areas 

 measured as to be of little importance. 



The above table shows an average of 15 cords per acre for the 

 better stands. If this wood were of a quality to make lumber, the 

 yield would be 12,000 board feet per acre. Little lumber is ever 

 cut from these stands, as most of the good material is cut before it 

 reaches timber dimension. The material left year after year to 

 grow to large size (Plate XXVIII, Fig. 1) is usually defective and 

 unfit for lumber. 



The table also shows the effects of culling. The inferior species 

 in the stands measured are 48 per cent of the total number of trees. 

 The constant removal of the Oaks, Chestnut, and Tulip-tree, and the 

 leaving of other species results in an ever-increasing proportion of 

 what may be termed the weeds of the forest. When the best stands 

 show 48 per cent of weeds, one may expect the poor stands to show 



