Letter, from Felix de Valreas to the Royal Society Sends his answer, which he had sent to the Royal Academy of Sciences, concerning his machine for perpetual motion (see EL/F2/10); discussing Mr Remi's theory for squaring a circle; also re-counts the objections of M Le Marquis de Simianne about his machine; wishes to be admitted to the Royal Academy of Paris Read to the Royal Society on 30 April 1713 25 March 1713