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etc. It was devised by Professor W. R. Johnson, in 1832, by whom it was called the rotascope.

A hæmoscope.

An instrument devised by Hermann, for regulating and measuring the thickness of a layer of blood for spectroscopic examination.

An opening made in the interior walls of a cruciform church to afford a view of the altar to those in the transepts; -- called, in architecture, a squint. Hook.

An instrument for exhibition or illustration of the phenomena of halos, parhelia, and the like.

That part of a boltrope which is sewed to the upper edge or head of a sail.

A telescope or instrument for viewing the sun without injury to the eyes, as through colored glasses, or with mirrors which reflect but a small portion of light. -- He`li*o*scop`ic, a.

See Bloodstone (a). Heliotrope purple, a grayish purple color.

The person at a geodetic station who has charge of the heliotrope.

Half turned round; half inverted; (Crystallog.) having a twinned structure.

Having each of the two flexor tendons of the toes bifid, the branches of one going to the first and second toes; those of the other, to the third and fourth toes. See Illust. in Append.

One who hoops casks or tubs; a cooper.

thing which is thought to be desirable; confidence; pleasing expectancy. The hypocrite's hope shall perish. Job vii. 13. He wished, but not with hope. Milton. New thoughts of God, new hopes of Heaven. Keble.

Full of hope, or agreeable expectation; inclined to hope; expectant. Men of their own natural inclination hopeful and strongly conceited. Hooker.

A hydrous phosphate of zinc in transparent prismatic crystals.

Destitute of hope; having no expectation of good; despairing. I am a woman, friendless, hopeless. Shak.

One who hopes. Swift.

The representation made of the aspect of the heavens at the moment of a person's birth, by which the astrologer professed to foretell the events of the person's life; especially, the sign of the zodiac rising above the horizon at such a moment.

One versed in horoscopy; an astrologer.

Same as Ascites.