Referee's report by Joseph John Thomson, on a paper 'A dynamical theory of the electric and luminiferous medium.— Part III. relations with material media' by Joseph Larmor Recommended for publication in Philosophical Transactions. It forms part of a series that already exists in Philosophical Transactions. His difficulty in understanding parts of the paper may be his fault and not the author's. Subject: Physics [Published in Philosophical Transactions B, 1897]. 9 June 1897