Catcott had been corresponding since 1733 with
John Hutchinson, who saw the Old Testament as a repository of scientific as well as divine knowledge. Catcott preached a sermon in
St Mark's Church (also called "Mayor's chapel") on 16 April 1735 (
The Supreme and Inferior Elahim, published London, 1736); this sermon, preached before Chief Justice
Philip Yorke, 1st Earl of Hardwicke, provoked "the first serious debate about Hutchinsonianism and the scientific evidence contained in the Old Testament". He preached another controversial sermon in August 1735, this one presenting linguistic analysis based on Hutchinson's work. The geologist and theologian
Alexander Catcott, also a Hutchinsonian, was his son. One theory of Catcott's, prompted by a challenge made by Hutchinson, attempted to explain the earth's
declination and its position in relation to the sun; Catcott proposed that the sun and the moon emitted particles of light that held the earth in equilibrium, eliminating the need for accepting the theory of gravity. ==Personal papers==