Referee's report by Kathleen Yardley Lonsdale, on a paper 'The theory of the vibrations and the Roman spectrum of the diamond lattice' by Helen M J Smith Sectional committee: Physics Recommended for publication in Philosophical Transactions. There is some ambiguity on whether an excess or deficit of electrons exists in certain positions in the lattice. The author has given herself unecessary trouble in making her lattice drawings in perspective. [Published in Philosophical Transactions A, 1948]. Date received not given. 1947