The Sphygmometer, an Instrument which Renders the Action of the Arteries Apparent to the Eye. The Utility of this Instrument in the Study of Disease. Researches on the Affections of the Heart, and on the Proper Means of Discriminating Them Considered. Being a Memoir, Presented to the Institute of France, by Dr. Julius Hérisson ; with an Improvement of the Instrument and Prefatory Remarks by the Translator, Dr. E.S. Blundell