INDEX. J7J 



Radiant heat. Dr. Herfchel's remarks refpefting, 311. 

 ReB'tfication offpirit of wine, improved apparatus tor, 230. 

 Red enamel, to prepare, 1 0. 



Refrafllon, horizontal, of the air, on an unufual, 54. 

 Refrangihility of radiant heat. Dr. Herfchel on, 323. 

 Remiel's geographical fyjiem of Herodotus, account of, 262, 

 Rhyme, prize for eflay on the origin and progrefs of, 177. 

 Royal academy of Berlin, proceedings of the, 17 8. 



■ .. , prize queftions by, 267. 



■ Stockholm, prize queftions by the, i3q. 



Royal Irifh academy, prize queftions by the, 177. 

 Royal Society of London, traiifaftlons of the, 364. 



Sage's method of feparating fulphur and iron from copper ore, 134, 



extrad^ipg acid of fugar from alcohol, 136. 

 Sage^ on animal earth, calcareous earth, fixed alkali, and acidum 



pingue, 246. 

 Saufure, M. Jun. on the influence of oxygen on germination, 1^1. 

 Scalding, a fubftitute for veiicatories. 

 Serpent, account of a monftrous, 286. 

 Silex, means to difcover in analyiis, 252. 

 Silver diffolved by Galvanic eleftricity, 342, 343. 



, a new fulminating preparation of, 371. 



Skirret, experiments to obtain fugar from, 210. 



Small-tox, a prize queftion on the, 177. 



Soda found in minerals, 236. 



Spanijb breed of Jl^eep, project for extending the, 350. 



Spirit of luine, improved apparntus for rectifying, 230. 



, to extraftthe acid of fugar contained in, 13^. 

 Starch, on the prepar^tiot) of, from horfe-cheftnuts, 87. 

 Stains for ivood, method of preparing, 235. 

 Straits of Malacca, defcription of the, 193. 



Strontian, charafter of, and means of difcovering in analyfes, 253. 

 Sugar, experiments and obfervations on the preparation of 105 



lar, 206. 

 Sulphur, to feparate from yellow copper ore, 134, 

 Sutphat of copper decompofed hy Volta's Galvanic pile, 343. 

 Hun, on viewing the, advantageoufly with tclefcopes, 327. 



, influence of the, on the atmofphere, 353.. 



Stiperfatation in the vegetable luorld, experiments to prove, 97. 



Tartarous acid, to feparafe from crude tartar, 46. 



Tatham, C. H. Efq. defcription of the Lanti antique vafe by, 36 f, 



Telefcopic expnirtunts by Dr. Herfchel, 327. 



Tetanus, a cafe of, cured by wine, 61. 



Tinning mdallizvrffels, new procefs for, 2 1 8. 



TouTmaline of Ccslon, analyiis of, 255. 



Trwvh, newp rcfpefting Horncnian's, 94. 



Travels HumhiAx' 'y in Spanifti America, 273. 



Trees, on the fplitling of, by lightning, 72. 



Turf and pc.it, propofal to employ in blaft furnaces, 43. 



Turkljf, 



