His library became noted for its theological and philological treasures. He studied botany, and his garden was said to exceed in variety the Royal Gardens at Kew. The summer house in which his grammars were composed still remains. Murray's first published work, "The Power of Religion on the Mind," York, 1787, 20th edition 1842, was twice translated into French. To the 8th edition (1795) was added 'Extracts from the Writings of divers Eminent Men representing the Evils of Stage Plays, &c.,' published separately 1789 and 1799.