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One of numerous minute rodlike structures formed of two or more cells situated behind the retinulæ in the compound eyes of insects, etc. See Illust. under Ommatidium.

A quartzose trachyte, an igneous rock often showing a fluidal structure. -- Rhy`o*lit"ic, a.

A translucent mineral of a green color and micaceous structure, belonging to the chlorite group; a hydrous silicate of alumina, magnesia, and iron; -- called also clinochlore.

In railroads, the bed or foundation on which the superstructure (ties, rails, etc.) rests; in common roads, the whole material laid in place and ready for travel.

Any structure having a flowerlike form; especially, the group of five broad ambulacra on the upper side of the spatangoid and clypeastroid sea urchins. See Illust. of Spicule, and Sand dollar, under Sand.

A defensive cell containing a minute rodlike structure which may be expelled. Such cells are found in certain Turbellaria.

y allied to the rays. The flattened and much elongated snout has a row of stout toothlike structures inserted along each edge, forming a sawlike organ with which it mutilates or kills its prey.

A temporary structure of timber, boards, etc., for various purposes, as for supporting workmen and materials in building, for exhibiting a spectacle upon, for holding the spectators at a show, etc. Pardon, gentles all, The flat, unraised spirits that have dared On this unworthy scaffold to bring forth So great an objec…

One of the small scalelike structures covering parts of some invertebrates, as those on the wings of Lepidoptera and on the body of Thysanura; the elytra of certain annelids. See Lepidoptera.

Having the wings covered with small scalelike structures, as the lepidoptera; scaly-winged.

Covered with scales, or scalelike structures; -- said of a fish, a reptile, a moth, etc.

ng and distinguishing the feet of which it is composed; to show, in reading, the metrical structure of; to recite metrically.

The structure on which a spectacle or play is exhibited; the part of a theater in which the acting is done, with its adjuncts and decorations; the stage.

Any crystalline rock having a foliated structure (see Foliation) and hence admitting of ready division into slabs or slates. The common kinds are mica schist, and hornblendic schist, consisting chiefly of quartz with mica or hornblende and often feldspar.

Of or pertaining to schist; having the structure of a schist.

ic chemist; a scientific reasoner; a scientific argument. Bossuet is as scientific in the structure of his sentences. Lander. Scientific method, the method employed in exact science and consisting of: (a) Careful and abundant observation and experiment.

A tubular structure found in Potsdam sandstone, and believed to be the fossil burrow of a marine worm.

Hence, a line of junction; a joint; a suture, as on a ship, a floor, or other structure; the line of union, or joint, of two boards, planks, metal plates, etc. Precepts should be so finely wrought together . . . that no coarse seam may discover where they join. Addison.

A kind of muscovite occuring in silky scales having a fibrous structure. It is characteristic of sericite schist.

Having the form or structure of setæ.