Referee's report by Edward Victor Appleton, on a paper 'On the magnetic ionic theory of radio transmission' by Thomas Lydwell Eckersley Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London', if at all. The paper does not add much new, only a new method of working out an already familiar theory. Refers to work of Hendrik Antoon Lorentz and Sybren Ruurds de Groot. Suggests the paper be rewritten, with an introduction explaining the reasons for another method for working out the theory. [Not published] Endorsed on verso as received 13 April 1933. [April 1933]