Letter, from Henry Oldenburg to Robert Boyle, dated at London Concerning the workings of the early Society - arrears of members' subscriptions, setting up a repository of curiosities; states that the sequel to 'Hydrostatical paradoxes' has arrived and that several treatises from France are expected; concerning de la Son's telescope; states that he will write to Hevelius to ask for information about making potash and about the Salgemmae-mines in Poland; concerning developments in the war against Britain 24 February 1666