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SCALE (1) A

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Originally appearing in Volume V24, Page 283 of the 1911 Encyclopedia Britannica.
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SCALE (1) A small thin flake, See also:plate or See also:shell. The word. in O. Eng. is sceale, so See also:bean-sceale, the husk or pod of a bean; cognate forms are found in Ger. Schale, O.H.G. Scale, from which the O. Fr. escale, See also:modern gcale, is borrowed. The ultimate See also:root is seen in the closely allied " shell," and also in See also:skull, See also:scalp, shale and skill, and means to See also:peel off, See also:separate, See also:divide. The word is used specifically (1) in See also:botany, of the rudimentary flake-like See also:leaf forming the covering of the leaf-buds of See also:deciduous trees and of the bracts of the See also:cone in conifers; (2) in See also:zoology, of the See also:flat, hard structures of the epidermis or exoskeleton in fishes, See also:reptiles. Thus in See also:ichthyology the various types of scales are classed as See also:cycloid (Gr. abaor, circle), where the growth is in layers, equally from the anterior and posterior edges; ctenoid (Gr. KTIv, See also:comb), where the posterior edge is toothed; ganoid (Gr. yavor, shining), with a hard enamelled See also:surface and usually rhomboidal in shape, and placoid (Gr. irXii , tablet), as in the ossified papillae of the cutis of the See also:shark. In reptiles the See also:term is applied to the structures which See also:form the covering of the true reptiles, See also:snakes and lizards. In See also:entomology the downy covering au-apended See also:cradle baaf of the wings of See also:lepidoptera consists of See also:minute scales, really modifications of hairs, covered with See also:fine lines, giving the See also:bright See also:colours.

Another form in O. Eng. scale is found glossing the See also:

Lat. lanx, flat bowl or dish, and is thus used of the dishes or cups of a See also:balance (bilanx), the See also:instrument itself being also called " scales." 2. Properly a See also:ladder, See also:flight of steps, now only used in the derived " scaling ladder." The word is derived from the Lat. scala (originally scandla, from scandere to climb). There are many transferred senses of the word, e.g. the distinguishing marks for purposes of measurement on a See also:rule or other measuring instrument; hence a graduated measure or a See also:system of proportional measurement or numeration, and particularly, in See also:music, a See also:series of tones at definite See also:standard intervals (see See also:HARMONY, MUSICAL NOTATION).

End of Article: SCALE (1) A

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