Letter, from Henry Oldenburg to Robert Boyle, dated at London Concerning political events in Europe; states that merchants have found the North-East passage to China; concerning the East Indian company; details of experiments at Gresham college - finding velocity of a bullet and time of falling bodies in water; that experiments about falling bodies were carried out at St Paul's; concerning Zulichem's system of Saturn confirmed with good glasses and about his new pendulum for longitude; about the post-chariot which will travel from Paris to Bordeaux in 4.5 days; list of enquiries concerning meadows and arable in England by the Committee of Agriculture 1 September 1664