Referee's report by Herbet Westren Turnbull, on a paper 'Ternary quadratic types' by John Arthur Todd Sectional committee: Mathematics Recommended for publication in Philosophical Transactions. The paper is lengthy and 'rounds off a chapter in the invariant theory which was initiataed 100 years ago by Coole, Cayley and later, the German school of Clebsch and Gordan'. He is glad that a problem he worked on forty years ago 'should at last find a seconder who has so well completed it'. It should be acceopted, despite it's length. Some small modifications could be made. [Published in Philosophical Transactions A, 1948]. Endorsed on verso as received 15 March 1948. February 1948