Philosophical and mathematical reasons Humbly offer'd to the Consideration of the publick: to prove that the present works, executing at Chester, to recover and preserve the navigation of the river Dee must intirely destroy the same. With some remarks on Mr. Badeslade's reasons, &c. thereon. By their most humble servant, John Grundy Of Congestone, in the County of Leicester, Land-Surveyor, and Teacher of the Mathematics - Grundy, John sen (printed for the author, 1736)