Clifford (William Kingdon), mathematician, philosopher, and moralist, of rare originality and boldness, b. Exeter 4 May, 1845. At the age of fifteen he was sent to King's College, London, where he showed an early genius for mathematics, publishing the Analogues of Pascal's Theorem at the age of eighteen. Entered Trinity College, Cambridge, in '63. In '67 he was second wrangler. Elected fellow of his college, he remained at Cambridge till 1870, when he accompanied the eclipse expedition to the Mediterranean. The next year he was appointed Professor of mathematics at London University, a post he held till his death. He was chosen F.R.S. '74. Married Miss Lucy Lane in April, '75. In the following year symptoms of consumption appeared, and he visited Algeria and Spain. He resumed work, but in '79 took a voyage to Madeira, where he died 3 March. Not long before his death appeared the first volume of his great mathematical work, Elements of Dynamic. Since his death have been published The Common Sense of the Exact Sciences, and Lectures and Essays, in two volumes, edited by Leslie Stephen and Mr. F. Pollock. These volumes include his most striking Freethought lectures and contributions to the Fortnightly and other reviews. He intended to form them into a volume on The Creed of Science. Clifford was an outspoken Atheist, and he wrote of Christianity as a religion which wrecked one civilisation and very nearly wrecked another. Cloots or Clootz (Johann Baptist, afterwards Anacharsis) Baron du Val de Grâce, Prussian enthusiast, b. near Cleves, 24 June, 1755, was a nephew of Cornelius de Pauw. In 1780 he published the The Certainty of the Proofs of Mohammedanism, under the pseudonym of Ali-gier-ber, an anagram of Bergier, whose Certainty of the Proofs of Christianity he parodies. He travelled widely, but became a resident of Paris and a warm partisan of the Revolution, to which he devoted his large fortune. He wrote a reply to Burke, and continually wrote and spoke in favor of a Universal Republic. On 19 June, 1790, he, at the head of men of all countries, asked a place at the feast of Federation, and henceforward was styled "orator of the human race." He was, with Paine, Priestley, Washington and Klopstock, made a French citizen, and in 1792 was elected to the Convention by two departments. He debaptised himself, taking the name Anacharsis, was a prime mover in the Anti-Catholic party, and induced Bishop Gobel to resign. He declared there was no other God but Nature. Incurring the enmity of Robespierre, he and Paine were arrested as foreigners. After two and a half months' imprisonment at St. Lazare, he was brought to the scaffold with the Hébertistes, 24 March, 1794. He died calmly, uttering materialist sentiments to the last.