Paper, concerning the motion of blood by Mr Guide Guide acknowledges that his previous work on the nature and cause of fevers was erroneous and better proven by Mr Mariot in his book published by Mr [Philippe] de la Hire. He then proposes an alternative theory regarding the comparison of the motion of the blood in the body to the motion of water in a hydraulic machine. Subject: Medicine / Physiology Read to the Royal Society on 9 November 1709. [1709]