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A mineral occuring in thin-bladed crystals and crystalline aggregates, of a sky-blue color. It is a silicate of aluminium. [Written also kyanite.]

A white crystalline substance, C3H7NSO2, containing sulphur, occuring as a constituent of certain rare urinary calculi, and occasionally found as a sediment in urine.

rence in the form of a dagger [|]. It is the second in order when more than one reference occurs on a page; -- called also obelisk. Dagger moth (Zoöl.), any moth of the genus Apatalea. The larvæ are often destructive to the foliage of fruit trees, etc. -- Dagger of lath, the wooden weapon given to the Vice in the old…

Daily occurence. [R.]

A mineral occuring in octahedral crystals, also massive, of a reddish color. It is a silicate of iron, zinc manganese, and glicinum, containing sulphur.

A borosilicate of lime commonly occuring in glassy,, greenish crystals. [Written also datholite.]

A hydrous carbonate of alumina and soda, occuring in white, bladed crustals.

A kind of incubus which occurs during wakefulness, attended by the peculiar pressure on the chest which characterizes nightmare. Dunglison.

The twelfth and last month of the year, containing thirty-one days. During this month occurs the winter solstice.

in the head and limbs, resembling those of rheumatism; -- called also breakbone fever. It occurs in India, Egypt, the West Indies, etc., is of short duration, and rarely fatal.

A natural occurrence of a useful mineral under the conditions to invite exploitation. Raymond.

Same as Stilbite. It commonly occurs in bundles or tufts of crystals.

f a falling body (Physics), that deviation from a strictly vertical line of descent which occurs in a body falling freely, in consequence of the rotation of the earth. -- Deviation of the compass, the angle which the needle of a ship's compass makes with the magnetic meridian by reason of the magnetism of the iron par…

ariety of sugar, C6H12O6 (so called from turning the plane of polarization to the right), occurring in many ripe fruits. Dextrose and levulose are obtained by the inversion of cane sugar or sucrose, and hence called invert sugar. Dextrose is chiefly obtained by the action of heat and acids on starch, and hence called a…

A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe.

A division of Trematoda in which alternate generations occur, the immediate young not resembling their parents.

Characterized by dimorphism; occurring under two distinct forms, not dependent on sex; dimorphic.

Having the sexes in applied to plants in which the female flowers occur on one individual and the male flowers on another of the same species, and to animals in which the ovum is produced by one individual and the sperm cell by another; -- opposed to monoecious.

A hydrous silicate of copper, occurring in emerald-green crystals.

ted; as, a rapid discharge of water from the pipe. The hemorrhage being stopped, the next occurrence is a thin serous discharge. S. Sharp.