Referee's report by Norman Feather, on a paper 'Nuclear disintegrations produced by cosmic rays' by J B Harding, S Lattimore and Donald Hill Perkins Sectional Committee: Physics Recommended for publication in the Philosophical Transactions of the Royal Society, after revision. Much of the work has been described in a Bakerian Lecture by George Paget Thomson. Finds the style 'indecisive and somewhat diffuse'. Suggests presenting the experimental material first, with the discussion coming later. Provides detailed criticism of minor points. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 20 September 1948. 17 September 1948