The CONTENTS.
III.A Discourse concerning the Difficulty of curing Fluxes, writ occasionally on reading Dr. De Jussieu’s Memoire in the History, &c. of the Royal Academy of Sciences in Paris, for the Year 1729. By William Cockburn, M.D. F.R.S. and of the College of Physicians, London.
IV.A Letter from Mr. John Dove to Edmund Halley, LL.D. F.R.S. and Reg. Astrom. at Greenwich, containing an Account of a Comet seen on February 29, 17312.
V.An Account of two Experiments of the Friction of Pullies.By the Reverend J. T. Desaguliers, LL.D. F.R.S.
I. An
