INDEX. 



Spring* anewoae» in Italy, i8i 



Stahl, l6i, etfeq. 



Starnps ooci'mtd with moulds of pl^fter 



of Paris, fulphur, or fciliug-wax, 



191 

 Steel, tempered, properties of, 265 

 Stereotype art, foundation of, 195 

 Stoli, Dr. 63 



Stijrms of wind, how produced, 188 

 Sugar of grapes, 178 

 Sully's fea time keepers, i.'jZ 

 Swell of the Tea followed by a ftorm 



itiguiry relative to, 185 

 Swimraing, on the art of, 324 

 Sylvefter, Charges, Efq. on galvanic pro* 



cefTes, in replj to H. B. K. 94 



T. 



Taproot af oaks, its exiftence doabted, 



Taj lor, 248 



T, B. on the properties of tempered fteel, 



265 

 Telefcope, a magnetic, 179 

 Temperature a: wnich water is of the 



greaceft denfity-, 128 

 Thenard, M. on the oxidation of metals, 



224 

 Thiout's detached efcapement |>rior to 



Ls Roy's, 38s 

 Tho.-iDrfon, 16, etfeq. 

 Thompfon, Dr. T. on filver coins, 396 

 Thui>der-ft rms, 416 

 Tia.e-kecpers, outline ef the piincipal 



inventions by which they have betn 



brought to perfedlion, 64, 273 

 Tin, facts towaras a hiftoiyof, 38 

 Touikt, fie Nauche 

 Trees, why their branches and roots 



exreiid l2::erally, 414 

 Troughcoa's nriagnetic telefcope, 179 



V. 



"Vanl-ermau's cheap and durable paints 

 with fifti-oil, 258 



Vegetables propofed as fubftitutes for 



quinquina, 57 

 Vegetation of feeds, 409 

 Velocity of a Ihip, meafure of, 343 

 Vefuvius, lace eruption of, defcribed» 



345 

 Vibrations of a balance rendered equal, 



387 

 Vilna, Imperial Academy, prize queftions 



in, 182 

 Vifion extremely Imperfe^, when the 



head and face are fubmerged in water, 



327 

 Volcanoes, phenomenon of, 204, et fcj, 



W. 



Ward, Dr. BiAop of Saliftury, p«. 

 tronifes Robert Hooke, 365 



Water, inveftigation of the temperature 

 at which it is of the grealcft denfity 

 128 ' 



Water-ram of Mongolfier, 98 



Wavellite, fluoric acid in, 267 



Weftring, Dr. J. T. on the dyes obtain- 

 ed from the different fpecies of club- 

 mofs, 227 



White willow bark propofed as a fubftl- 

 tute for quinquina, 58 



Wilkinfon, Dr. Letter from, refpefting 

 the fuppofed production of muriatic 

 acid from water by galvanifm, 342 



Will, Dr. 63 



Wiliemet, M. 57 



Windows in confined fituations may be 

 advantageoufly glazed with roughened 

 glafs, 32 



Winds, theory of, 185 



Winthorp, Mr. F. B. 181. 



W. N. on edge-tools, 92 — On the claim, 

 of Lavoifier to originality in the dif- 

 covery of the modern theory of che- 

 miftry, 93, 233. — On the hydraulic 

 ram of Monguifier, loo, iic. — On 

 fqualls of wind and fvvells of the fea, 

 in anfwer to M. M. 186. — On the in. 

 cruftation of iron boilers, 190.— On 

 the 



