Modulus of Elasticity. 2,890,000 (Ednie-Brown).[68] Modulus of Rupture. 8000 (Ednie-Brown).[68] Remarks. Once named Eucalyptus colossea because of great size. Rich in essential oils. Grows rapidly, one specimen thirty-five years old, having reached a height of one hundred and thirty-five feet. Distinct from Kauri Pine (_D. australis_) of New Zealand. Diversicolor refers to leaves the upper and lower sides of which differ in color. [p127] FOOTNOTE [Footnote 68: Report Forests Western Australia, Presented to Parliament, 1896.] TUART. _Eucalyptus gomphocephala._ Nomenclature. Tuart (local and common name). Tewart (Australia). Tooart (Australia). White Gum (Australia). Locality. Australia. Features of Tree. One hundred to one hundred and fifty feet in height, four to six feet in diameter. Lower branches forty or more feet from ground. Bright, cheerful appearance, straight trunk, gray-white bark. Color, Appearance, or Grain of Wood. Heartwood light yellow, compact appearance, fibres interlaced. Structural Qualities of Wood. Very hard, heavy, strong, tough, rigid, durable, seasons well. Difficult to split or work. Representative Uses of Wood. Keels, buffers, stern-posts, frames, wheel-hubs, shafts. Weight of Seasoned Wood in Pounds per Cubic Foot. 67 (Ednie-Brown).[69] Modulus of Elasticity. 2,300,000 (Ednie-Brown).[69] Modulus of Rupture. 9300 (Ednie-Brown).[69] Remarks. Highly prized locally. One of the strongest of woods. Gomphocephala refers to peculiarities in lid of calyx-tube. [p128] FOOTNOTE [Footnote 69: Report on Forests Western Australia, Presented to Parliament, 1896.] BLUE GUM, FEVER TREE. _Eucalyptus globulus._ Nomenclature. Blue Gum (local and common name). Fever Tree (Australia). Balluck (Australia). Locality. Native of Australia acclimated in southern California and elsewhere throughout the world. Features of Tree. Two hundred to sometimes three hundred or more feet in height. Three to six feet in diameter. Loose, shaggy, exfoliating bark.[70] Leaves sometimes twelve inches in length. Color varies with age. Characteristic odor. Color, Appearance, or Grain of Wood. Straw color. Sapwood lighter. Indistinct annual rings. Fibres interlaced. Structural Qualities of Wood. Hard, heavy, durable, difficult to split. Representative Uses of Wood. Rollers, paving-blocks, ship-building, fuel. Weight of Seasoned Wood in Pounds per Cubic Foot. 43 to 69 (Mueller). 57 to 69 (Lazlett). Modulus of Elasticity. Modulus of Rupture. Remarks. The Eucalyptus of California. The species planted in malarial districts. Sanitary powers due to evaporation from large leaves or presence of essential oils, which are thought to have medicinal qualities. Grows very rapidly. [p129] FOOTNOTE