Agnolo, Baccio d' (ba˙ch′ō da˙n′yo-lō), a Florentine wood-carver, sculptor, and architect; designed some of the finest palaces, &c., in Florence, such as the Villa Borghese, the Palais Bartolini, &c.; born 1460, died 1543.

Agno′men (Lat.), an additional name given by the Romans to an individual in allusion to some quality, circumstance, or achievement by which he was distinguished, as Africanus added to P. Cornelius Scipio.

Agnone (a˙-nyō′nā), a town of S. Italy, province of Molise, famous for the excellence of its copper wares. Pop. 6000.

Agnostics (ag-nos′tiks; Gr. a, not, gignōskein, to know), a modern term invented by Huxley in 1869 and applied to those who disclaim any knowledge of God, the origin of the universe, immortality, &c. The agnostics, or adherents of this doctrine, hold that the mind of man is limited to a knowledge of phenomena and of what is relative, and that, therefore, the infinite, the absolute, and the unconditioned, being beyond all experience, are consequently beyond its range. Agnosticism is therefore the attitude of 'solemnly suspended judgment', and cannot be identified with atheism. The agnostics do not deny the existence of a Divine Being, but merely maintain that we have no scientific ground for either belief or denial.—Bibliography: Sir Leslie Stephen, An Agnostic's Apology; R. Flint, Agnosticism; J. Ward, Naturalism and Agnosticism.

Agnus Castus, a shrub, Vitex Agnuscastus, nat. ord. Verbenaceæ, a native of the Mediterranean countries, with white flowers and acrid, aromatic fruits. It had anciently the imagined virtue of preserving chastity—hence the term castus (Lat., chaste).

Agnus Dei (dē′ī; Lat., 'the Lamb of God'), a term applied to Christ in John, i, 29, and in the Roman Catholic liturgy a prayer beginning with the words 'Agnus Dei', generally sung before the communion. The term is also commonly given to a medal, or more frequently a disk of wax, round, oblong, or oval, consecrated by the pope, stamped with the figure of a lamb supporting the banner of the cross; supposed to possess great virtues, such as preserving those who carry it in faith from accidents, &c. Jean Châtel, the assassin of Henri IV, was found covered with such medals.

Agon′ic Line (Gr. a, not, and gōnia, an angle), in terrestrial magnetism a name applied to the line which joins all the places on the earth's surface at which the needle of the compass points due north and south, without any declination. See Magnetism.

Ag′ony Column, a column in the advertising sheet of some of the daily journals, in which disappearances, losses, mysterious appeals and correspondence, and generally any advertising eccentricity appear.

Ag′ora, the market-place of a Greek town, corresponding to the Roman forum. The Agora of Athens is situated in a valley partially enclosed by the Acropolis, Areopagus, Pnyx, and Museum.

Agos′ta. See Augusta.