Referee's report by Edmund Taylor Whittaker, on a paper 'On a system of functional dynamics and optics' by W H Watson Sectional Committee: Mathematics Recommended for publication in the 'Philosophical Transactions of the Royal Society'. One 'may doubt whether physics will ever need this type of mathematics, and whether the author will succeed ultimately in working out his ideas into a coherent and complete theory. But the work contains much that is interesting and suggestive.' [Published in the Philosophical Transactions of the Royal Society] Endorsed on verso as received 8 July 1936. [July 1936]