Referee's report by Percival Spencer Umfreville Pickering, on a paper 'Complete freezing-point curves of binary alloys containing silver or copper, together with another metal' by Charles Thomas Heycock and Francis Henry Neville Recommended for publication in Philosophical Transactions. The paper contains careful and valuable work. The author should have devoted more attention to the nature and meaning of the curves that he investigated. Subject: Chemistry [Published in Philosophical Transactions A, 1897]. July 1896