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A myrtaceous genus of trees, mostly Australian. Many of them grow to an immense height, one or two species exceeding the height even of the California Sequoia.

eray. -- Blue gage. See under Gage, a plum. -- Blue gum, an Australian myrtaceous tree (Eucalyptus globulus), of the loftiest proportions, now cultivated in tropical and warm temperate regions for its timber, and as a protection against malaria. The essential oil is beginning to be used in medicine. The timber is ver…

n uncrystallizable sirup by the decomposition of melitose; also obtained from a Tasmanian eucalyptus, -- whence its name.

A volatile, terpenelike oil extracted from the eucalyptus, and consisting largely of cymene.

An Australian name for the very hard wood of the Eucalyptus piluralis.

A tree of the genus Eucalyptus. See Eucalpytus. (c) The sweet gum tree of the United States (Liquidambar styraciflua), a large and beautiful tree with pointedly lobed leaves and woody burlike fruit. It exudes an aromatic terebinthine juice. -- Gum water, a solution of gum, esp. of gum arabic, in water. -- Gum wood, t…

The Australian Eucalyptus Sideroxylon, used largely by carpenters and shipbuilders; -- called also ironwood.

The mahoganylike wood of the Australian Eucalyptus marginata. See Eucalyptus.

m cotton seeds and from the so-called Australian manna (a secretion of certain species of Eucalyptus).

r of trees and shrubs (Myrtaceæ), of which the myrtle is the type. It includes the genera Eucalyptus, Pimenta, Lechythis, and about seventy more.

thol. -- Peppermint tree (Bot.), a name given to several Australian species of gum tree (Eucalyptus amygdalina, E. piperita, E. odorata, etc.) which have hard and durable wood, and yield an essential oil.

cid; gluely. Stringy bark (Bot.), a name given in Australia to several trees of the genus Eucalyptus (as E. amygdalina, obliqua, capitellata, macrorhyncha, piperita, pilularis, and tetradonta), which have a fibrous bark used by the aborigines for making cordage and cloth.

y inhabited Tasmania, but is now extinct. Tasmanain cider tree. (Bot.) See the Note under Eucalyptus. -- Tasmanain devil. (Zoöl.) See under Devil. -- Tasmanain wolf (Zoöl.), a savage carnivorous marsupial; -- called also zebra wolf. See Zebra wolf, under Wolf.

to the earth and the sky, and their faces to the horizon, as in the Australian species of Eucalyptus. -- Vertical limb, a graduated arc attached to an instrument, as a theodolite, for measuring vertical angles. -- Vertical line. (a) (Dialing) A line perpendicular to the horizon.

e American ermine moth (Spilosoma Virginica). -- Woolly butt (Bot.), an Australian tree (Eucalyptus longifolia), so named because of its fibrous bark. -- Woolly louse (Zoöl.), a plant louse (Schizoneura, or Erisoma, lanigera) which is often very injurious to the apple tree. It is covered with a dense coat of white fi…