Referee's report by Horace Lamb, on a paper 'The vibrations of an infinite system of vortex rings' by H Levy and A G Forsdyke Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. Questions whether the long and intricate analysis in the paper is more suited for a specialist journal, such as the London Mathematical Society. This is the preferred opinion of the referee, except that the previous parts of the series were printed in the Proceedings. [Published in the 'Proceedings of the Royal Society of London' A, 1927] Endorsed on verso as received 1 June 1927. [June 1927]