An answer to what Dr. Freind has written in his History of physick : concerning several mistakes, which he pretends to have found in a short work of Dr. Le Clerc, intituled, An essay of a plan, &c. Translated from the eighth article of Bibliotheque ancienne, & moderne, vol.27. Part 2. by Mr Le Clerc. To which is added, a preface, by W.Cockburn, M.D. - Le Clerc, Jean (printed for J.Clarke, 1728)