Referee's report by George Carey Foster, on a paper 'On the determination of the boiling-point of sulphur, and on a method of standardising platinum resistance thermometers by reference to it.—Experiments made at the Cavendish laboratory, Cambridge' by Hugh Longbourne Callendar and Ernest Howard Griffiths Recommended for publication in the 'Philosophical Transactions of the Royal Society'. The paper is supplementary to another by the same author, published in the Philosophical Transactions for 1887. Suggests further investigations be undertaken into a greater temperature range. Subject: Physics and Chemistry [Published in the Philosophical Transactions of the Royal Society, 1891] 5 January 1891