COiVTENTS OF VOLUME FIRST. 



Pagt- 



.Advertisement, and Biographical Notice of Mr, Oldenburg 1 



Campani's Improvement of Optic Glasses 2 



A Spot in Jupiter's Belt, by Mr. Hook ibid 



Biographical Notice of the Campani's .'3 



Motion of the Comet of l664:, predicted by M. Auzout ibid 



Biographical Notices of Mr. Hook and M. Auzout ibid 



Ex^rimental History of Cold, by Mr. Boyle 4 



Biooraphical Notice of Mr. Boyle ibid 



Account of a Monstrous Calf j by Mr. Boyle 5 



Of a peculiar Lead Ore of Germany 6 



Of an Hungarian Bolus ibid 



New American Whale Fishing about Bermudas ibid 



Success of Pendulum Watches at Sea for the Longitude; by Major Holmes 7 



Character of M. de Fermat 8 



On Uvo Comets; by Sig. J. D. Cassini ibid 



Biooraphical Notice of J. D. Cassini ibid 



Reflections on Cassini's Account of Comets; by M. Auzout 9 



The Mines of Mercury in Friuli ; by Dr Walter Pope 10 



The blowing of Fire by the fall of Water; by the same 12 



On the ordering of Silk Worms; by :Mr. Edw. Dlgges ibid 



Account of Hook's Micrographia 13 



Experiments and Observations on May-dew; by Mr. 1. Henshaw ibid 



Motion of the Second Comet predicted; by M. Auzout 14 



Conjunction of tlie Ocean and the Mediterranean ; by M. Petit j 5 



Biographical Notice of M. Petit ibid 



Of killing Rattle Snakes; by Capt. Silas Taylor l6 



Persons killed by Subterraneous Damps; by Sir Rob. Moray ibid 



Mineral of Liege, yielding Brimstone and Vitriol; by the same 1/ 



Account of Mr. Boyle's Experimental History of Cold ibid 



Extraordinary Tides in the West of Scotland; by Sir Rob. Moray oq 



Apertures of Object Glasses and Lengths of Telescopes; by M. Auzout 22 



Auzout's Remarks on Hook's Instrument for Grinding Optic Glasses 23 



On illuminating Objects and burning Bodies by tlie Sun; by M. Auzout ibid 



Further Account of Campani's Optic Glasses ; by the same 04 



Campani's Answer and Auzout's Reply 25 



Adks and Mines at Liege; by Sir Robert Moray 27 



Of De Son's Method of breaking Rocks; by the same 28 



Observables on a Monstrous Head; by Mr. Boyle 29 



Observables in the Body of the Eari of Balcarras 30 



Breeding of Silk Worms and making Silk in France ibid 



Inquiries concerning Agriculture 32 



Account of Villette's Burning Glass 34 



The Optic Glasses and Telescopes of M. Hevelius and M. Huygens s6 



Biographical Notice of M. Hevelius ibid 



Representations in Wax, and Maps in Bas Relief 37 



Vol. I. * 



