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A piece of tallow placed in a cavity at the lower end of a sounding lead, to bring up the sand, shells, etc., of the sea bottom. Totten.

A mineral of a tin-white color and metallic luster, containing arsenic, sulphur, and iron; -- also called arsenical pyrites and mispickel.

A crystallized substance, resembling camphor, obtained from the Asarum Europæum; -- called also camphor of asarum.

A white, nitrogenous, crystallizable substance, C4H8N2O3+H2O, found in many plants, and first obtained from asparagus. It is believed to aid in the disposition of nitrogenous matter throughout the plant; -- called also altheine.

A white crystalline compound of acetyl and salicylic acid used as a drug for the salicylic acid liberated from it in the intestines.

ically the same word; but modern usage has appropriated assay chiefly to experiments in metallurgy, and essay to intellectual and bodily efforts. See Essay.]

One who assays. Specifically: One who examines metallic ores or compounds, for the purpose of determining the amount of any particular metal in the same, especially of gold or silver.

An apportionment of a subscription for stock into successive installments; also, one of these installments (in England termed a "call"). [U. S.]

Mental connection, or that which is mentally linked or associated with a thing. Words . . . must owe their powers association. Johnson. Why should . . . the holiest words, with all their venerable associations, be profaned Coleridge.

A poisonous, white, crystallizable alkaloid, extracted from the Atropa belladonna, or deadly nightshade, and the Datura Stramonium, or thorn apple. It is remarkable for its power in dilating the pupil of the eye. Called also daturine.

At bottom; fundamentally; essentially.

A hydrous carbonate of copper and zinc, found in pale green or blue crystalline aggregations. It yields a kind of brass on reduction.

A crystalline globulin, contained in oat kernels, very similar in composition to excelsin, but different in reactions and crystalline form.

approach bordered on each side by trees; any broad passageway thus bordered. An avenue of tall elms and branching chestnuts. W. Black.

et; to shun; to abstain from; as, to avoid the company of gamesters. What need a man forestall his date of grief. And run to meet what he would most avoid Milton. He carefully avoided every act which could goad them into open hostility. Macaulay.

A saw (as a tenon saw) whose blade is stiffened by an added metallic back.

A division for the stalls of an open stable.

Act of weighing mentally; comparison; estimate. A fair balance of the advantages on either side. Atterbury.

A white, crystalline substance,

high specific gravity, and hence is often called heavy spar. It is a common mineral in metallic veins.