Referee's report by John Ashworth Ratcliffe, on a paper 'Electric currents in the ionosphere. I. The conductivity' by W G Baker and David Forbes Martyn Sectional committee: Physics Paper reference code: A31 Recommended for publication in the Philosophical Transactions. Ratcliffe comments the paper is difficult to follow at point and makes suggestions to make it more understandable. [Published in Philosophical Transactions A, 1953]. Date received not given. 14 March 1953