4 2 THE PRINCIPAL SPECIES OF WOOD. 



Sugar Maple, Hard Maple. \ A f cr sacch rum * 



( Acer saccnannum Wang. 



Nomenclature. (Sud worth.) 



Sugar Maple, Hard Maple (local Rock Maple (Me., Vt., N. H., 



and common names). Conn., Mass., R. I., N. Y., 



Black Maple (Fla. , Ky., N. C.). Tenn., 111., Mich., la., 



Sugar Tree (frequent). Kans., Wis., Minn.). 



Locality. 



Best development Maine to Minnesota; range extends southward 

 to Florida and Texas. 



Features of Tree. 



Seventy to one hundred feet and more in height, one and one- 

 half to four feet in diameter. The fruit or "maple-key" 

 with wings less than right angles ripen in early autumn ; one 

 seed-cavity is usually empty. Foliage turns to brilliant reds 

 and other colors later. Large impressive tree. 



Color, Appearance, or Grain of Wood. 



Heartwood brownish, sapwood lighter, close-grained, compact 

 structure, occasional "curly," "blister," or " birdseye " 

 effects. 



Structural Qualities of Wood. 



Tough, heavy, hard, strong, susceptible of good polish, wears 

 evenly, not durable when exposed. 



Representative Uses of Wood. 



Furniture, shoe-lasts, piano-actions, wooden type for showbills, 

 pegs, interior finish, flooring, ship-keels, vehicles, fuel, 

 veneers, rails, etc. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 



43- 

 Modulus of Elasticity. 



2,070,000. 

 Modulus of Rupture. 



16,300. 



Remarks. 



Birdseye, blister, and to a less extent curly and landscape 

 effects pronounced in this species. Saccharum refers to sugar 

 manufactured from the sap. Hard maple is because of hard- 

 ness of wood. 



