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nd flood. -- Half time, half the ordinary time for work or attendance; as, the half-time system. -- Half tint (Fine Arts), a middle or intermediate tint, as in drawing or painting. See Demitint. -- Half truth, a statement only partially true, or which gives only a part of the truth. Mrs. Browning. -- Half year, the…

s made by them, in which gradation of tone in the photograph is reproduced by a graduated system of dotted and checkered spots, usually nearly invisible to the unaided eye, produced by the interposition between the camera and the object of a screen. The name alludes to the fact that this process was the first that was…

nsations which have no corresponding external cause, arising from disorder or the nervous system, as in delirium tremens; delusion. Hallucinations are always evidence of cerebral derangement and are common phenomena of insanity. W. A. Hammond.

A subdivision of the Devonian system of America; -- so named from Hamilton, Madison Co., New York. It includes the Marcellus, Hamilton, and Genesee epochs or groups. See the Chart of Geology.

A minor subdivision at the base of the Cambrian system in Wales.

The just adaptation of parts to each other, in any system or combination of things, or in things, or things intended to form a connected whole; such an agreement between the different parts of a design or composition as to produce unity of effect; as, the harmony of the universe.

rior or superior part of an animal, containing the brain, or chief ganglia of the nervous system, the mouth, and in the higher animals, the chief sensory organs; poll; cephalon.

center; the part most hidden and within; the inmost or most essential part of any body or system; the source of life and motion in any organization; the chief or vital portion; the center of activity, or of energetic or efficient action; as, the heart of a country, of a tree, etc. Exploits done in the heart of France.…

The religious system or rites of a heathen nation; idolatry; paganism.

The system of logic and philosophy set forth by Hegel, a German writer (1770-1831).

A system of seven sounds.

A collection of dried specimens of plants, systematically arranged. Gray.

Of or pertaining to the system which explains the causes of diseases and the operations of medicine on the principles of the hermetic philosophy, and which made much use, as a remedy, of an alkali and an acid; as, hermetic medicine.

An opinion or doctrine, or a system of doctrines, contrary to some established standard of faith, as the Scriptures, the creed or standards of a church, etc.; heresy. Bp. Bull.

Having the ganglia of the nervous system unsymmetrically arranged; -- said of certain invertebrate animals.

Having six sides and six angles; six-sided. Hexagonal system. (Crystal.) See under Crystallization.

The medical philosophy or system of Hippocrates.

A systematic, written account of events, particularly of those affecting a nation, institution, science, or art, and usually connected with a philosophical explanation of their causes; a true story, as distinguished from a romance; -- distinguished also from annals, which relate simply the facts and events of each year…

The philosophical system of Thomas Hobbes, an English materialist (

which the patient suffers, the remedies being usually administered in minute doses. This system was founded by Dr. Samuel Hahnemann, and is opposed to allopathy, or heteropathy. [Written also homoepathy.]