Referee's report by Baden Powell, on a paper 'Further researches into the properties of the sulphate of lodo-quinine or Herapathite, more especially in regard to its crystallography, with additional facts concerning its optical relations' by William Bird Herapath Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. Cannot offer an opinion on chemical or crystallographic aspects of paper. The optical aspects do not advance 'any new principle'. Subject: Physics and Chemistry, Mineralogy [Published in the 'Proceedings of the Royal Society of London'] 26 April 1854