Referee's report by Charles Herbert Lees, on a paper 'A new form of Wehnelt interrupter' by F H Newman Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests reducing the length of the paper. Refers to work of Goldhammer [?]. The results do not advance much on what was known 20 years previously. The theory is incomplete and only a slight advance on Simon's Theory. [Published in the 'Proceedings of the Royal Society of London' A, 1921] Endorsed on verso as received 8 March 1921. [March 1921]