Letter, 'Containing the description of a very extraordinary stone or calculus taken out of the bladder of a man after death' from the Marquis de Caumont [Joseph de Seytres] to Hans Sloane The Marquis de Caumont describes a bladder stone removed from a dead man that had an unusual shape with branches akin to those that appear on trees and vegetables. The Marquis asks Sloane to examine the stone and provide his opinion. Subject: Physiology / Medicine Published in Philosophical Transactions as 'A letter from the Marquis de Caumont to Sir Hans Sloane, Bart. President of the Royal Society, containing the description of a very extraordinary stone or calcuus taken out of the bladder of a man after death'. Written by the Marquis de Caumont at Avignon [France]. Translated from the original French by Tho [Thomas] Stack. Read to the Royal Society on 18 March 1735. 30 June 1732