A Defence and continuation of the Discourse concerning the period of humane life : Being a reply to a late answer entituled, A Letter to a Gentleman, &c. To which is added, an appendix, wherein several objections urged in private are considered, and Mr. Gales severe, but groundless charge is examined / [by R. E.]. - R. E. (Printed, and to be sold by Enoch Wyer, at the White Hart in St. Pauls Church-yard, 1678)