the committee of the British Association lobbying government to improve knowledge of terrestrial magnetism by establishing observing stations. He prepared the instructions for the observatories, and the officers appointed to take charge of them were trained by him in Dublin. Later life From 1846 to 1851 Lloyd was president of the Royal Irish Academy, who in 1862 awarded him their Cunningham gold medal. He resigned his chair of natural philosophy in 1843, on his accession to a senior fellowship in Trinity College. In 1862 he became vice-provost, and in 1867 was appointed provost, in succession to Richard MacDonnell. He was president of the British Association in 1857, when it met in Dublin, and delivered an inaugural address, which was published, in which he gave a sketch of the recent progress made in astronomy, terrestrial magnetism, and other branches of science. Lloyd was a leading member of the general synod of the Irish church which came into existence on Irish disestablishment, and took part in its committee for the revision of the prayer-book. He died in the provost's house, Dublin, 17 January 1881. Awards and honours Lloyd was a fellow of the Royal Societies of London and Edinburgh, and an honorary member of many other learned societies of Europe and America. He was elected as a member to the American Philosophical Society in 1839. In 1855 the university of Oxford conferred on him the degree of D.C.L., and in 1874 the emperor of Germany the order Pour le Mérite. A bust of him, by Albert Bruce Joy, was placed in the library of Trinity College in 1892. Works In 1834 Lloyd furnished the British Association, at its request, with a report on The Progress and Present State of Physical Optics (see Report for 1834). Papers which he wrote on terrestrial magnetism and other subjects are in the Reports of the British Association and in the Transactions and Proceedings of the Royal Irish Academy. Besides tracts, his other published works were: A Treatise on Light and Vision, London, 1831. Two Introductory Lectures on Physical and Mechanical Science, London, 1834. Lectures on the Wave-theory of Light, two parts, Dublin, 1836 and 1841; republished, London, 1857, as Elementary Treatise on the Wave-theory of Light. Account of the Magnetic Observatory at Dublin, and of the Instruments and Methods of Observation employed there, London, 1842. An Account of the Method of Determining the Total Intensity of