Cowley obtained permission to retire into the country; and through his friend, Lord St Albans, he obtained a property near Chertsey, where, devoting himself to botany and books, he lived in comparative solitude until his death. He took a practical interest in experimental science, and he was one of those advocating the foundation of an academy for the protection of scientific enterprise. Cowley's pamphlet on "The Advancement of Experimental Philosophy", 1661, immediately preceded the foundation of the Royal Society; to which Cowley, in March 1667, at the suggestion of John Evelyn, addressed an ode. He died in the Porch House, in Chertsey, in consequence of having caught a cold while superintending his farm-labourers in the meadows late on a summer evening. On 3 August, Cowley was buried in Westminster Abbey beside the ashes of Chaucer and Spenser, where in 1675 the Duke of Buckingham erected a monument to his memory. His "Poemata Latina", including six books "Plantarum", were printed in 1668. The poetry of Cowley rapidly fell into neglect.