%0 Book %A Boyle, Robert, 1627-1691. %I printed by W[illiam]. G[odbid]. and are to be sold by M. Pitt, at the Angel against the Little North Door of St. Paul's Church %D 1674 %C London %G English %T Tracts: containing I. Suspicions about some hidden qualities of the air : with an appendix touching celestial magnets, and some other particulars. II. Animadversions upon Mr. Hobbes's Problemata de vacuo. III. A discourse of the cause of attraction by suction. By the Honourable Robert Boyle, Esq; Fellow of the Royal Society.