Manuscript, 'Experiment designed to shew whether the muscles of an animal, in their action are bigger or lesse in their totall sum of dimensions' by Dr [Jonathan] Goddard Paper describing an experiment with a case for an arm that can be immersed in water with a glass tube attached. The level of water in the tube would change with each pulse of the individual's arm as well as on contracting muscles of the arm. Subject: Physiology Read to the Royal Society on 16 December 1669. [1669]