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That branch of logic which teaches the rules and modes of reasoning; the application of logical principles to discursive reasoning; the science or art of discriminating truth from error; logical discussion.

One who explains geological phenomena by the Noachian deluge. Lyell.

Definition; logical direction. [Obs.] Dr. H. More.

etc., before washing. Dirt bed (Geom.), a layer of clayey earth forming a stratum in a geological formation. Dirt beds are common among the coal measures. -- Dirt eating. (a) The use of certain kinds of clay for food, existing among some tribes of Indians; geophagism. Humboldt. (b) (Med.) Same as Chthonophagia. -- Di…

Marking distinction or separation; disjunctive. Discretive proposition (Logic & Gram.), one that expresses distinction, opposition, or variety, by means of discretive particles, as but, though, yet, etc.; as, travelers change their climate, but not their temper.

ted by disjunctive conjunctions; as it is either day or night. -- Disjunctive syllogism (Logic), one in which the major proposition is disjunctive; as, the earth moves in a circle or an ellipse; but in does not move in a circle, therefore it moves in an ellipse.

To separate by definition of terms or logical division of a subject with regard to difference; as, to distinguish sounds into high and low. Moses distinguished the causes of the flood into those that belong to the heavens, and those that belong to the earth. T. Burnet.

rtionment; as, the distribution of an estate among heirs or children. The phenomena of geological distribution are exactly analogous to those of geography. A. R. Wallace.

Calf stained dark brown and worked without gilding, often used for theological books.

To divide, as the heavens, into twelve houses. See House, in astrological sense. [Obs.]

See Dike. The spelling dyke is restricted by some to the geological meaning.

The religious or mythological book of the old Scandinavian tribes of German origin, containing two collections of Sagas (legends, myths) of the old northern gods and heroes.

surfaces exposed to the wind. This kite was extensively used by Eddy in his famous meteorological experiments. It is now generally superseded by the box kite.

That branch of physiology which treats of electric phenomena produced through physiological agencies.

An imaginary supernatural being, commonly a little sprite, much like a fairy; a mythological diminutive spirit, supposed to haunt hills and wild places, and generally represented as delighting in mischievous tricks. Every elf, and fairy sprite, Hop as light as bird from brier. Shak.

To follow or come afterward; to follow as a consequence or in chronological succession; to result; as, an ensuing conclusion or effect; the year ensuing was a cold one. So spoke the Dame, but no applause ensued. Pope. Damage to the mind or the body, or to both, ensues, unless the exciting cause be presently removed. I.…

Relating to insects; entomological.

the envelope Increase the capability of some type of machine or system; -- usu. by technological development.

surable or infinite space of time; eternity; a long space of time; an age. The eons of geological time. Huxley.

milar conditions of the earth; commonly a minor division or part of a period. The long geological epoch which stored up the vast coal measures. J. C. Shairp.