Boats, railway ties, fencing, poles, posts, shingles. Weight of Seasoned Wood in Pounds per Cubic Foot. 23 (U. S. Forestry Div.). 20. Modulus of Elasticity. 910,000 (average of 87 tests by U. S. Forestry Div.). 570,000. Modulus of Rupture. 6310 (average of 87 tests by U. S. Forestry Div.). 6400. Remarks. Grows chiefly in swamps. "White cedar posts" last many years. Thyoides is from Thuya meaning arborvitæ and eidos, the Greek for "resemblance." [p174] PORT ORFORD CEDAR, LAWSON CYPRESS. _Chamæcyparis lawsoniana Murr._ Nomenclature. (Sudworth.) White Cedar, Oregon Cedar (Oreg., Cal.). Ginger Pine (Cal.). Locality. Pacific coast, California and Oregon. Features of Tree. One hundred to sometimes two hundred feet in height, four to twelve (?) feet in diameter. Leaves overlapping in sprays, very small cones one-fourth inch in diameter. Color, Appearance, or Grain of Wood. Heartwood yellowish white, sapwood similar. Very close-grained. Structural Qualities of Wood. Light, hard, strong, durable, easily worked, fragrant, resinous. Representative Uses of Wood. Lumber, flooring, interior finish, ties, posts, matches, ship-building. Weight of Seasoned Wood in Pounds per Cubic Foot. 28. Modulus of Elasticity. 1,730,000. Modulus of Rupture. 12,600. Remarks. Resin employed as insecticide. [p175] YELLOW CEDAR, YELLOW CYPRESS, SITKA CYPRESS. _Chamæcyparis nootkatensis (Lamb) Spach._ _Chamæcyparis nutkaënsis Spach._ Nomenclature. (Sudworth.) Nootka Cypress, Nootka Sound Cypress (local). Alaska Cypress, Alaska Ground Cypress (local). Locality. Oregon to Alaska. Features of Tree. One hundred feet or more in height, three to five feet or more in diameter. Sharp-pointed, overlapping leaves, small globular cones. Color, Appearance, or Grain of Wood. Heartwood clear light yellow, thin sapwood nearly white. Close-grained, compact structure. Structural Qualities of Wood. Light, not strong, brittle, hard, durable in contact with soil, easily worked, receives high polish, fragrant. Representative Uses of Wood. Ship-building, furniture, interior finish. Weight of Seasoned Wood in Pounds per Cubic Foot. 29. Modulus of Elasticity. 1,460,000. Modulus of Rupture. 11,000. Remarks. Valuable Alaska timber tree. Commercially not distinguished from Pacific Arborvitæ. [p176] INCENSE CEDAR, WHITE CEDAR. _Libocedrus decurrens Torr._ Nomenclature. (Sudworth.) Post Cedar, California Post Cedar (local). Bastard Cedar, Red Cedar, California White Cedar (local). Juniper (Nevada). Locality. California and Oregon. Features of Tree. Ninety to one hundred and twenty-five feet in height, occasionally higher, three to six feet in diameter. Color, Appearance, or Grain of Wood. Heartwood brownish, sapwood lighter. Close-grained, compact structure. Heartwood often pitted. Fragrant. Structural Qualities of Wood. Light, brittle, soft, durable.