Letter, from Henry Oldenburg to Robert Boyle, dated at London Concerning a book on the Florentine experiments with their titles in Italian (eg air pressure, artificial freezing, compression of water, motion of sound); concerning changes to Steno's experiment to show motion in the artery; that Smethwick's telescopes were going to be thoroughly examined at the next meeting; Auzout's comments on the senses; that the Bishop of Salisbury wanted the Society to recognise the work Oldenburg was doing 10 March 1668