Referee's report by William Thomson, Lord Kelvin, on a paper 'The value of the mechanical equivalent of heat, deduced from some experiments performed with the view of establishing the relation between the electrical and mechanical units; together with an investigation into the capacity for heat of water at different temperatures' by Ernest Howard Griffiths Recommended for publication. The investigation is carried out with 'remarkable skill and perseverance'. Subject: Physics [Published in Philosophical Transactions A, 1893]. 31 January 1893