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Having white or silvery foliage.

One of certain very minute whitish or colorless granules occurring in the protoplasm of plants and supposed to be the nuclei around which starch granules will form.

A mineral of a color between white and steel-gray, with a metallic luster, and consisting chiefly of arsenic and iron.

An instrument, devised by Professor Helmholtz, for testing the color perception of the eye, or for comparing different lights, as to their constituent color or their relative whiteness.

Same as Low side window, under Low, a.

A genus of fungi, remarkable for the great quantity of spores, forming a fine dust, which is thrown out like smoke when the plant is compressed or burst; puffball.

A plant of the genus Lycopodium.

Same as Lycopodium powder. See under Lycopodium.

Belonging, or relating, to the Lycopodiaceæ, an order of cryptogamous plants (called also club mosses) with branching stems, and small, crowded, one-nerved, and usually pointed leaves.

An old name for a fossil club moss.

A genus of mosslike plants, the type of the order Lycopodiaceæ; club moss. Lycopodium powder, a fine powder or dust composed of the spores of Lycopodium, and other plants of the order Lycopodiaceæ. It is highly inflammable, and is sometimes used in the manufacture of fireworks, and the artificial representation of ligh…

Visible to the unassisted eye; -- as opposed to microscopic. -- Mac`ro*scop"ic*al*ly, adv.

A class of air-breathing Arthropoda; -- called also Protracheata, and Onychophora.

One of the Malacopterygii.

ly jointed, and not spiny. It includes the carp, pike, salmon, shad, etc. Called also Malacopteri.

Belonging to the Malacopterygii.

Same as Manometer.

The science of the determination of the density of vapors and gases.

A speculum for examining a natural passage, as the urethra.

ewed through a large lens with stereoptical effects. It is often combined with the stereoscope.