_Betula lenta_ Linnaeus.
_Betula_, the cla.s.sical Latin name; _lenta_, meaning tenacious, sticky, may refer to the gum which exudes from the trunk.
[Ill.u.s.tration: Habitat.]
HABITAT: (See map); best in Tennessee Mountains.
[Ill.u.s.tration: Leaf.]
CHARACTERISTICS OF THE TREE: Height, 50"-80"; diameter, 2"-5"; trunk, rarely straight; bark, dark reddish brown, on old trunks deeply furrowed and broken into thick, irregular plates, marked with horizontal lenticels; resembles cherry; spicy, aromatic; leaves, ovate, oblong, 2"-6" long, irregularly serrate; fruit, erect strobiles.
APPEARANCE OF WOOD: Color, dark, reddish brown; diffuse-porous; rings, obscure; grain, close, satiny, polishes well, often stained to imitate mahogany; rays, numerous, obscure.
PHYSICAL QUALITIES: Heavy (6th in this list); 47 lbs. per cu. ft.; sp.
gr., 0.7617; very strong (4th in this list); very elastic (6th in this list); hard (11th in this list); shrinkage, 6 per cent.; warps, little; not durable if exposed; rather hard to work; splits hard, tough.
COMMON USES: Dowel pins, wooden ware, boats and ships.
REMARKS: The birches are not usually distinguished from one another in the market.
[Ill.u.s.tration: Radial Section, life size.]
[Ill.u.s.tration: Cross-section, magnified 37-1/2 diameters.]
[Ill.u.s.tration: Tangential Section, life size.]
38
YELLOW BIRCH. GRAY BIRCH.
Yellow and gray, both refer to the color of the bark.
_Betula lutea_ F. A. Michaux.
_Betula_, the cla.s.sical Latin name; _lutea_ refers to the yellow color of the bark.
[Ill.u.s.tration: Habitat.]
HABITAT: (See map); best in northern New York and New England.
[Ill.u.s.tration: Leaf.]
CHARACTERISTICS OF THE TREE: Height, 60"-100"; diameter, 3"-4"; branches, low; bark, silvery, yellow, gray, peeling horizontally into thin, papery, persistent layers, but on very old trunks, there are rough, irregular, plate-like scales; leaves, ovate, sharply, doubly serrate; fruit, erect, 1" strobiles.
APPEARANCE OF WOOD: Color, light reddish brown, sap-wood white; diffuse-porous; rings, obscure; grain, close, fairly straight; rays, numerous, obscure.
PHYSICAL QUALITIES: Heavy (21st in this list); 40 lbs. per cu. ft.; sp. gr., 0.6553; very strong (2nd in this list); very elastic (2d in this list); medium hard (22d in this list); shrinkage, 6 per cent.; warps .........; not durable; rather hard to work, polishes well; splits with difficulty, holds nails well.
COMMON USES: Furniture, spools, b.u.t.ton molds, shoe lasts, shoe pegs, pill boxes, yokes.
REMARKS: The birches are not usually distinguished from one another in the market.
[Ill.u.s.tration: Radial Section, life size.]
[Ill.u.s.tration: Cross-section, magnified 37-1/2 diameters.]
[Ill.u.s.tration: Tangential Section, life size.]
39
BEECH.
_f.a.gus grandifolia_ Ehrhart. _f.a.gus americana_ Sweet. _f.a.gus ferruginea_ Aiton. _f.a.gus atropunicea_ (Marshall) Sudworth.
_f.a.gus_ (Greek _phago_ means to eat), refers to edible nut; _ferruginea_, refers to the iron rust color of the leaves in the fall; _atropunicea_, meaning dark red or purple, may refer to the color of the leaves of the copper beech.
[Ill.u.s.tration: Habitat.]
HABITAT: (See map); best in southern Alleghany Mountains and lower Ohio valley.
[Ill.u.s.tration: Leaf.]
CHARACTERISTICS OF THE TREE: Height, 70"-80" and even 120"; diameter, 3"-4"; in forest, trunk tall, slender, sinewy; bark, smooth, ashy gray; leaves, feather-veined, wedge-shaped, serrate; leaf buds, long, pointed; fruit, 2 small triangular nuts, enclosed in burr, seeds about once in 3 years.
APPEARANCE OF WOOD: Color, reddish, variable, sap-wood white; diffuse-porous; rings, obscure; grain, straight; rays, broad, very conspicuous.
PHYSICAL QUALITIES: Heavy (20th in this list); 42 lbs. per cu. ft.; sp. gr., 0.6883; very strong (10th in this list); elastic (13th in this list); hard (22d in this list); shrinkage, 5 per cent.; warps and checks during seasoning; not durable; hard to work, takes fine polish; splits with difficulty, hard to nail.
COMMON USES: Plane stocks, shoe lasts, tool handles, chairs.
REMARKS: Often forms pure forests. Uses due to its hardness.
[Ill.u.s.tration: Radial Section, life size.]
[Ill.u.s.tration: Cross-section, magnified 37-1/2 diameters].
[Ill.u.s.tration: Tangential Section, life size.]
40
CHESTNUT.
_Castanea dentata_ (Marshall) Borkhausen.
_Castanea_, the cla.s.sical Greek and Latin name; _dentata_, refers to toothed leaf.