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The highest division, or subclass, of gastropod mollusks, including those that have the gills situated anteriorly, or forward of the heart, and the sexes separate.

One of a class of amorphous nitrogenous principles, containing, as a rule, a small amount of sulphur; an albuminoid, as blood fibrin, casein of milk, etc. Proteids are present in nearly all animal fluids and make up the greater part of animal tissues and organs. They are also important constituents of vegetable tissues…

One of a class of soluble products formed in the digestion of proteids with gastric and pancreatic juice, and also by the hydrolytic action of boiling dilute acids on proteids. Proteoses are divided into the two groups, the primary and secondary proteoses.

rganized body; the first individual, or pair of individuals, of a species. A species is a class of individuals, each of which is hypothetically considered to be the descendant of the same protoplast, or of the same pair of protoplasts. Latham.

ndent disturbing agencies intervening. -- Proximate principle (Physiol. Chem.), one of a class of bodies existing ready formed in animal and vegetable tissues, and separable by chemical analysis, as albumin, sugar, collagen, fat, etc.

te. It includes the dragon flies, May flies, white ants, etc. By some zoölogists they are classed with the Orthoptera; by others, with the Neuroptera.

A class of flowerless plants, embracing ferns, horsetails, club mosses, quillworts, and other like plants. See the Note under Cryptogamia. -- Pter"i*do*phyte`, n.

A class of Mollusca in which the anterior lobes of the foot are developed in the form of broad, thin, winglike organs, with which they swim at near the surface of the sea.

One of a class of animal bases or alkaloids formed in the putrefaction of various kinds of albuminous matter, and closely related to the vegetable alkaloids; a cadaveric poison. The ptomaines, as a class, have their origin in dead matter, by which they are to be distinguished from the leucomaines.

n or prepare pupils for the universities. Eton, Harrow, Rugby, and Winchester are of this class.

and public revenues; hence, a collector of toll or tribute. The inferior officers of this class were often oppressive in their exactions, and were regarded with great detestation. As Jesus at meat . . . many publicans and sinners came and sat down with him and his disciples. Matt. 1x. 10. How like a fawning publican he…

An extensive division, or sub-class, of hermaphrodite gastropods, in which the mantle cavity is modified into an air- breathing organ, as in Helix, or land snails, Limax, or garden slugs, and many pond snails, as Limnæa and Planorbis.

The whole body of the clergy; preachers as a class; also, preaching. I say the pulpit (in the sober use Of its legitimate, peculiar powers) Must stand acknowledged, while the world shall stand, The most important and effectual guard, Support, and ornament of virtue's cause. Cowper.

One of a class of sacred Hindoo poetical works in the Sanskrit language which treat of the creation, destruction, and renovation of worlds, the genealogy and achievements of gods and heroes, the reigns of the Manus, and the transactions of their descendants. The principal Puranas are eighteen in number, and there are t…

A class of marine arthropods in which the body is small and thin, and the eight legs usually very long; -- called also Pantopoda.

Consisting of five; arranged by fives. Boyle. Quinary system (Zoöl.), a fanciful classification based on the hypothesis that each group contains five types.

es in government or social institutions, especially such changes as are intended to level class inequalities; -- opposed to conservative. In politics they [the Independents] were, to use phrase of their own time. "Root-and-Branch men," or, to use the kindred phrase of our own, Radicals. Macaulay.

Arranged systematically, or according to classes or subjects; as, a catalogue raisonné. See under Catalogue.

A division into principal and subordinate classes, heads, or departments; also, one of the subordinate parts; as, the ramifications a subject or scheme.

To dispose in a classified or in systematic order; to arrange regularly; as, to range plants and animals in genera and species.