MARYLAND GEOLOGICAL SURVEY 



311 



in the maple sugar industry or in the orchards; the old trees are often 

 defective and there are many dead trees throughout the groves. 

 Nothing is being done to improve old groves or to produce new ones, 

 and as the lumbering operations are taking the principal areas con- 

 taining Sugar Maple, the future production of sugar and syrup will 

 probably be small. 



The character of the stand of this sub-type is shown in the follow- 

 ing table : , : " 



TABLE NO. 4. 



SUB-TYPE: HEMLOCK AND HAED WOODS. 

 Average of 29 acres. 



Trees 12 inches and over in 

 Species. 



Average 



number of 



trees per acre. 



Hemlock 23.37 



Sugar Maple 20.57 



Beech 7.72 



Basswood 5.54 



Yellow Birch 4.34 



White Oak 2.58 



Chestnut 2.21 



Red Oak 1.89 



Sweet Birch , 1.62 



Chestnut Oak 15 



White Pine 



Spruce 



Red Maple 



Other species 2.72 



Average of all species 72.71 



diameter breast-high. 



Percentage Average Average 

 of each diameter stand 



species, breast-high, per acre. 



(Doyle Rule.) 

 Inches. Board Feet. 



18.8 



32.14 



28.29 



10.62 



7.62 



5.97 



3.55 



3.04 



2.59 



2.23 



.21 



3.74 

 100.00 



18.5 

 14.9 

 17.1 

 17.7 

 24.6 

 19.1 

 21.1 

 17.6 

 22.9 



17.1 

 18.3 



9,194.55 

 7,209.05 

 1,177.04 

 707.50 

 801.45 

 1,583.28 

 823.87 

 665.96 

 330.80 

 76.84 



603.70 

 23,374.14 



HEMLOCK. The last stand of practically pure Hemlock is found 

 on the Youghiogheny river near Muddy Creek. This, with the excep- 

 tion of the White Pine of the Swamp Timber, is the heaviest stand 

 in the county. The trees are large and grow on steep, rocky slopes 

 above the river. A dense thicket of laurel covers the ground under 

 the trees and adds to the difficulty of lumbering. However, the cost 

 of logging on this tract has not prevented the lumbermen from 

 attempting the removal of the timber. A railroad is being built 



