Gerland , E

Denis Papin was born, 1647; Education: Angers; graduated (1669); Career: Assistant to Christian Huyghens (FRS 1663) in the laboratory of the Academie Royale des Sciences; moved to London (1675); assistant to Robert Boyle (FRS 1663) (1675-1679); Assistant to Robert Hooke (FRS 1663), Curator of the Royal Society (1679); Fellow of the Royal Society, (1680); returned to Paris (1680); Curator of the Accademia Sarottiana in Venice (1681-1684); Curator of Experiments at the Royal Society (1684-1688); Professor of Mathematics at the University of Marburg (1688-1695); moved to Kassel, where he assisted the Landgrave of Hesse with his experiments (1695-1707); returned to London (1707); died (c 1712).

Gottfried Wilhelm von Leibniz was born, 1646; Education: Nicolai School; Leipzig (admitted 1661); Jena (admitted 1663); Altdorf; LLD (1666); Career: Employed by the Elector Johann Philipp von Schonborn of Mainz as an adviser on legal matters (1667); began work on his calculating machine (1671); went on a diplomatic missions to Paris (1672) and London (1673); Fellow of the Royal Society, (1673); on the death of the Elector, went to Paris, hoping for a post at the Academie des Sciences, but was disappointed; visited Antoni van Leeuwenhoek (FRS 1680); Adviser and Librarian to the Duke of Hannover (1676); Councillor at the Court of Hannover (1679); travelled through Germany and Italy in order to prepare a genealogy of the house of Brunswick and visited Vincenzo Viviani (FRS 1696) in Florence and Marcello Malpighi (FRS 1665) in Bologna (1687-1689); Privy Councillor in Hannover; in the service of Sophia Charlotte, Electress of Brandenburg (1700); involved in a dispute about calculus with Isaac Newton (FRS 1672), in which he was accused of plagiarism, a charge which was upheld by a commission of the Royal Society (1712); Privy Councillor to Peter the Great of Russia (1712); Imperial Privy Councillor at Vienna (1712-1714); returned to Hannover and unsuccessfully petitioned the Elector, now George I of Great Britain, for a post (1714); died, 1716.