Dell (John Henry), artist and poet, b. 11 Aug. 1832. Contributed to Progress, wrote Nature Pictures, '71, and The Dawning Grey, '85, a volume of vigorous verse, imbued with the spirit of democracy and freethought. Died 31 Jan. 1888. Deluc (Adolphe), Professor of Chemistry at Brussels, b. Paris, 1 Sept. 1811. Collaborated on La Libre Recherche. De Maillet. See Maillet (Benoît de). Democritus, a wealthy Atheistic philosopher, b. Abdera, Thrace, B.C. 460. He travelled to Egypt and over a great part of Asia, and is also said to have visited India. He is supposed to have been acquainted with Leucippus, and sixty works were ascribed to him. Died B.C. 357. He taught that all existence consisted of atoms, and made the discovery of causes the object of scientific inquiry. He is said to have laughed at life in general, which Montaigne says is better than to imitate Heraclitus and weep, since mankind are not so unhappy as vain. Democritus was the forerunner of Epicurus, who improved his system. Demonax, a cynical philosopher who lived in the second century of the Christian era and rejected all religion. An account of him was written by Lucian. Demora (Gianbattista), director of the Libero Pensatore of Milan, and author of some dramatic works. Denis (Hector), Belgian advocate and professor of political economy and philosophy at Brussels University, b. Braine-le-Comte, 29 April, 1842. Has written largely on social questions and contributed to La Liberté, la Philosophie Positive, etc. Is one of the Council of the International Federation of Freethinkers. Denslow (Van Buren), American writer, author of essays on Modern Thinkers, 1880, to which Colonel Ingersoll wrote an introduction. He contributed a paper on the value of irreligion to the Religio Philosophic journal of America, Jan. '78, and has written in the Truthseeker and other journals. Denton (William F.), poet, geologist, and lecturer, b. Darlington, Durham, 8 Jan. 1823. After attaining manhood he emigrated to the United States, '48, and in '56 published Poems for Reformers. He was a prolific writer, and constant lecturer on temperance, psychology, geology, and Freethought. In '72 he published Radical Discourses on Religious Subjects (Boston, '72), and Radical Rhymes, '79. He travelled to Australasia, and died of a fever while conducting scientific explorations in New Guinea 26 Aug. 1883.