The sylva americana; or, A description of the forest trees indigenous to the United States, practically and botanically considered . rst sheathing of woodenhouses, which are afterwards covered with white pine clap economy the interior frame is sometimes made of hemlockspruce, and it is found when protected from humidity, to be asdurable as any other species. It is well adapted to lathes of theinterior walls, and is exported in this form to England. In theEastern States it is taken for the posts of rural fence, which lastabout fifteen years, and are preferable to those of gray and re
The sylva americana; or, A description of the forest trees indigenous to the United States, practically and botanically considered . rst sheathing of woodenhouses, which are afterwards covered with white pine clap economy the interior frame is sometimes made of hemlockspruce, and it is found when protected from humidity, to be asdurable as any other species. It is well adapted to lathes of theinterior walls, and is exported in this form to England. In theEastern States it is taken for the posts of rural fence, which lastabout fifteen years, and are preferable to those of gray and redoak. Its bark is used as a substitute for that of the oaks in thepreparation of leather. It is taken from the tree in June, andhalf of the epidermis is shaven off before it is thrown into themill. Its deep red color is imparted to the leather, which issaid to be inferior to oak bark, but the two species united arebetter than either of them alone. The bark contains a smallquantity of resin, commonly called Hemlock Balsam, which isapplied to similar purposes as the resin of the white spruce. Black or Double Spruce. Abies Fig. 1. A seed. PLATE V. Fig. 2. A branclr willi a ((inc. This species is indigenousto the same countries as thewhite spruce, and is calledEpinette noire Rnd Ejnnettea la Mere in Canada, DoubleSpruce in the state of Maine,and Black Spruce in NovaScotia, though the last twodenominations are knownthroughout all these coun-tries. We have preferredthat of Black Spruce, whichexpresses a striking characterof the tree, and is contrastedwith that of the white the influence of the DENDROLOGY- 99 soil upon the wood it is sometimes called Red Spruce. Theblack spruce is most abundant in the countries lying between the44th and 53d degrees of latitude, and between the 55th and 75thdegrees of longitude ; and it is so multiplied as often to constitute athird part of the forests by which they are uninterruptedly south it is seldom seen except
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Keywords: ., boo, bookcentury1800, booksubjectforestsandforestry, bookyear1832
