Referee's report by Edward Frankland, on two papers 'Research conducted for the medical department of the privy council at the pathological laboratory of St. Thomas's Hospital. First series.—The chemical nature and composition, combinations, and metamorphoses of the colouring-matters of bile' and 'Research conducted for the medical department of the privy council at the pathological laboratory of St. Thomas's Hospital regarding urine' by Johann Ludwig Wilhelm Thudichum Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. The analytical data are not conclusive. Subject: Physiology [Published in the 'Proceedings of the Royal Society of London'] Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. The analytical data are improbable and the evidence poor. Subject: Physiology [Not published] 3 January 1867