Priestley (Joseph), LL.D., English philosopher, b. Fieldhead, near Leeds, 18 March, 1733. Brought up as a Calvinist, he found his way to broad Unitarianism. Famous as a pneumatic chemist, he defended the doctrine of philosophical necessity, and in a dissertation annexed to his edition of Hartley expressed doubts of the immateriality of the sentient principal in man. This doctrine he forcibly supported in his Disquisitions on Matter and Spirit, 1777. Through the obloquy these works produced, he lost his position as librarian to Lord Shelburne. He then removed to Birmingham, and became minister of an independent Unitarian congregation, and occupied himself on his History of the Corruptions of Christianity and History of the Early Opinions Concerning Jesus Christ, which involved him in controversy with Bishop Horsley and others. In consequence of his sympathy with the French Revolution, his house was burnt and sacked in a riot, 14 July, 1791. After this he removed to Hackney, and was finally goaded to seek an asylum in the United States, which he reached in 1794. Even in America he endured some uneasiness on account of his opinions until Jefferson became president. Died 6 Feb. 1804. Pringle (Allen), Canadian Freethinker, author of Ingersoll in Canada, 1880. Proctor (Richard Anthony), English astronomer, b. Chelsea, 23 March, 1837. Educated at King's College, London, and at St. John's, Cambridge, where he became B.A. in '60. In '66 he became Fellow of the Royal Astronomical Society, of which he afterwards became hon. sec. He maintained in '69 the since-established theory of the solar corona. He wrote, lectured, and edited, far and wide, and left nearly fifty volumes, chiefly popularising science. Attracted by Newman, he was for a while a Catholic, but thought out the question of Catholicism and science, and in a letter to the New York Tribune, Nov. '75, formally renounced that religion as irreconcilable with scientific facts. His remarks on the so-called Star of Bethlehem in The Universe of Suns, and other Science Gleanings, and his Sunday lectures, indicated his heresy. In '81 he started Knowledge, in which appeared many valuable papers, notably one (Jan. '87), "The Beginning of Christianity." He entirely rejected the miraculous elements of the gospels, which he considered largely a rechauffé of solar myths. In other articles in the Freethinkers' Magazine and the Open Court he pointed out the coincidence between the Christian stories and solar myths, and also with stories found in Josephus. The very last article he published before his untimely death was a vindication of Colonel Ingersoll in his controversy with Gladstone in the North American Review. In '84 he settled at St. Josephs, Mobille, where he contracted yellow fever and died at New York, 12 Sep. 1888.