Paper, 'An account of the bones of animals being changed to a red colour by aliment only' by John Belchier Belchier discusses the circulation of blood within bones and describes a phenomenon in which the bones of hogs were turned a red colour through diet. The hogs were fed bran that had been boiled in a copper with printed calicoes in order to clear the fabric. The cartilege and marrow of the bones remained white, but the hard portion of the bones turned red. Subject: Physiology / Chemistry Published in Philosophical Transactions as 'An account of the bones of animals being changed to a red colour by aliment only'. Read to the Royal Society on 25 November 1736. [1736]