Referee's report by Francis Sibson, on a paper 'On a geometrical representation of the action of the heart' by William John Macquorn Rankine Recommended for publication in the 'Proceedings of the Royal Society of London'. Refers to work of John Reid. Suggests the paper could be summarised in an abstract, with some of the illustrations, rather than published in full in the Philosophical Transactions. Subject: Physiology, Mathematics [Paper untraced - publication status unknown] 11 March 1852