Letter, from Henry Oldenburg to Robert Boyle, dated at London States that Hooke's account about measuring air pressure at sea is attached (see EL/OB/76); concerning Willis's powders from Bristol which can make 'Spaw-water'; concerning Merret's paper entitled 'Simple extract of St Vincent's water' made with vitriolate juice; transcribing part of Michael Behm's letter (in Latin) about his views on Boyle's works on colour and fluidity (see EL/B1/126 for original); concerns printing Boyle's 'Hydrostatical paradoxes'; concerns establishing a residence for the Society - appointing a Committee of Beggars and wishing Robert Moray to canvass in Scotland 14 January 1667