44= INDEX. 



Snow found on the Alp?, of a red colour, by SaufTure, page 168. 



Souffriere in St. Lucia, defcription of, I, 256. 



Sound, experiments relating to Chiadni's theory of, 389. 



Spinel ruby, Vauquelin's snalyfis of the, 41. 



Spirit of turpentine-, attempt to freeze, 79. 



Spring of 'Mater, cie'.ciption of a remarkable, 49. 



Staining of 'wood, Beckmann's experiments on, 54. 



Statifiics, intelligence relating to, 109, 329. 



Steam of water, prize queflion concerning, 419. 



Steel, a new procefs for making, by Clouet, 400. 



Steel yards, an improved one by C Paul, 4o3. 



St. Antony' 's fire, a cafe of, cured by vital air, 418. 



Stuff, a new kind of manufacture of, 1 10. 



Sugar, to prepare from beet roots, 291. 



Sulphat of firontian, quantities of, found near Briftol, 32 T. 



Sulphureous acid gas, method of fumigating with the, 397. 



Sulphuric acid, frozen by artificial cold, 79. 



Suphuric ether, does not freeze at 50 below o°, 79. 



Surgery, prefent ftate of, in Turkey, 127. 



■ Ruffian method of treating froft bitten limbs, 128. 



Stuedifh flone-paper, on the compofition of, Ij8. 



Siuinc, comparifon between them and men, 284. 



Sympathetic ink, a new one, 328. 



Sympathetic ink, a new kind by Meyer, 37J. 



Teylcrian Society, prize queflions by the, 3 1 5. 



Thornton's, Dr., Communications on pneumatic medicine, 90, 213, 



299, 418. 

 Thornton, Dr., on objects for the microfcope, and on Cuftance'g 



machine for making vegetable cuttings, 302. 

 Thornton, Dr., on Hooke's difcoveries relative to air, 37°* 

 Toads and frogs found inclofed alive in (tones, &c. 225. 

 Tcaldo's fyftem refpecting changes of weather, 120. 

 Tradition, a curious one in Egypt, (fee note) 342. 

 Travels in Turkey, Egypt, Perfia, in 1792, &c. 337. 

 Trees, to preferve from being hurt by frolt, 3 10. 

 Turkey, prefent ftate of furgery in, 127. 

 Turkey trade, obfervations on the, 262. 

 Turkey cock, inftance of eggs being hatched by a, 309, 

 Turkijh tobacco pipes , on the manufacture of, 165. 



Vauquelin's analyfis of the fpinel ruby, 41. 



Vegetation, to preferve feeds in a ftate fit for, 30. 



V'getablcs, to convert fpcedily into manure, 32. 



Vibrating fur faces, on the figures formed with fand, &c. on, 389. 



Voigt's experiments relative to Chiadni's difcoveries in found, 389. 



Voltano in the ifknd of St. Lucia, defcription of, i, 256. 



Wa'.er, 



