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 - Boyle, Robert, 1627-1691 (M Pitt, 1674)