. . . "1657Z"^^ . "1735Z"^^ . . . "1735-04-05Z"^^ . "Derham, William"@en . "William Derham"@en . "Clergyman and natural philosopher" . . "William Derham FRS (26 November 1657 \u2013 5 April 1735) was an English clergyman, natural theologian and natural philosopher. He produced the earliest, reasonably accurate estimate of the speed of sound."@en . . "1657-11-26Z"^^ . . . . .