32 Index. 



Providence (R. I.) aftronomical obfervations at, Vol. I. p. 97 — its longi- 

 tude and latitude, 103. 

 PunBuct'ion, obJervations on, Vol. III. p. 307 — a new mode propofed, 308. 

 Piilr'id fore throat, &c. how cured. Vol. II. p. 288. 

 Putr'ifad'ion, excites heat. Vol. I. appendix p. 34. 



^ladrant (Godfrey^ s) ■3Xi'\ViV^X0\ZVi\t\A oi. Vol. I. appendix -p. 21. 



( Hadkt'i ) an eafy and accurate way to adjufl its glaffes, on land, 



for the back obfervation. Vol. IV. p. 154. 

 ^eries concerning vapours, the eledrical ftate of the atmofphere and aurora . 



borealis, Vol. IJ. p. 100. 



R 



Rain, the efFeifl of tledricity. Vol. II. p. 100. 



with fiihes, frogs or tadpoles, accounted for. Vol. II. p. 117. 



quantity of, at Bradford (N. Eng.) in 1773, Vol. II. p. 135 — in Ire- 

 land, Vol. IV. p. 244. 



Ratfws, method of making. Vol. I. p. 193. 



Rarefied 2\x explained, Vol. II. p. 2. 



j'^j.V/f-/'7ai-^ [crotalus horridus] on the cure of its bite. Vol. III. p. 100 — 

 its poifon how counteradted, 102, 104, 109 — reputed cures for it, 114. 



memoir on the fafcinating faculty afcribed to this and other Ame- 

 rican ferpents, Vol. IV. p. 74 — other obfervations thereon, 363, 370. 



curious particulars concerning the, Vol. IV p. 366 — different 



fpecies of, 368 — a new fpecies defcribed, ib. — winter retreats of, 374. 



Redhari [cortex ruber] medical hiftory of. Vol. II. p. 289 — more efficaci- 

 ous than common baik, 290. 



Rfgenerathrt of plants, Vol. III. p. 203. 



Regulations oi ihe A. P. S. Vol. II. p. v. 



Relaxation, the predifpofing caufe of tetanus, Vol. II. p. 227, 



/i/j'^/;;^ and cables of Ihips, propofed improvement in, Vol. II. p. 297. 



Right afcenfion and declination of /8 bootes and the pole-ftar. Vol. III. p. 116. 



Riltenkoufe (Daiid) his new-invented orrery defcribed, Vol. I. p. i his 



account of the tranfit of Venus, 8, 13, 26 — he fixes the latitude of No- 

 riton, 22 — his delineation of the tranfit, 36 — his account of a comet in 

 1770, appendix-^. 37 — his eafy method of deducing the true time of die 

 fun's pafTmg the meridian per clock, appendix, 47 — his explanation of an 

 optical deception. Vol. II. p. 37 — his obfervations and conjeftures on 

 a falling flar or meteor, 175 — his account of fome experiments on mag- 

 netifm, in a letter to John Page, Efq. 178 — his invention for placing a 

 meridian mark, 181 — his adoption of a fpidcr's thread, inflead of filk, 

 a great improvement, 183 — his obfervations on a lately dilcovered co- 

 met, 195 — his folution of an optical problem flated by F. Hopkinfon, 

 Efq. 202— on the tranfit of Venus over the fun's difc, Nov. 12, 1782, 



p. 260 — 



