ABRAHAM, a very learned dissenting divine, was born in 1748 at Llanbrynmair in Wales, and studied for the ministry at Hoxton academy. As his mind developed, it became eminently and keenly practical. He was eager to seize and ready to employ any knowledge that might be turned to immediate advantage. There was scarcely an office within the sphere of his profession for which he had not qualified himself, and to which he was not willing to apply all his energies. For a considerable period he was both mathematical tutor at Hoxton academy and pastor of the Presbyterian congregation, St Thomas's, Southwark. His activity only extended itself when, in 1783, he was translated to the congregation of Jewin Street, in the Old Jewry. Every subject that had any reference to the cause of public enlightenment received part of his attention. He kept up his acquaintance with the general learning of the day. He delivered occasional lectures at Salers' Hall in the winter evenings; became a leading business-man among the Nonconformists of the capital; and took an active part in every scheme of philanthropy. His literary labours at the same time were not neglected. Many of his sermons issued at intervals from the press. Several contributions from his pen found their way into the Monthly Review. Chambers's Encyclopaedia appeared under his editorship between 1781 and 1786. At length his own Cyclopaedia began to be published in 1802, and was completed in forty-five quarto volumes in 1819. In consideration of all these great and multifarious labours, Rees was held in high estimation. At his death in 1825 he was D.D. of the university of Edinburgh, and a member of the Royal Society, and of several other learned bodies.