refembling the hyacinth, 44. — On the 



cryftallization of pure lime, 302 

 Troughton, Mr. Edward, 11, 287, 312. 



— Uies fpidcrs webs for the crofs wires 



of telefcopes, 319 

 Toning, very accurate procefs of, 320 

 Turpeth mineral, 114 



V. 



Vm Marum, charges a large battery by 

 galvanifm, 155. — His experiments, by 

 which the great Haarlem battery was 

 Inftantly charged by the galvanic pile, 



173 



Van Mons, 236, 238 



Varnifh of Le Blond, 267 



Vauquelin, 109. — On the earth eaten by 

 certain favage nations, 152. — Account 

 of a blue oxide of iron, 153,238,258. 

 — On the cryftals of hidrofulphuiet of 

 foda, 303 



Vegetation, how affected by air, 157 



Venetian fchool j what occasioned the fn- 

 perior briiliancv* of their pictures, 265 



Vcnturi, Cit. on camphor, &c. 51 



Villele, 159 



Violets, fyrup of, reftored by oxigen, 29S 



Vinci, L. da, his oil painting, 264 



Vinegar, radical, eafy procefs for making, 

 by Perez, 39 



Volta on the motions of odorant bodies on 

 water, 51, 130. — His theory of galva- 

 nifm, T35, &c— Pile of, Prieftley on 

 the, 118 



Violyk, ProfefTor, on whifkers, 154 



U. 



timber, 112 



y/hcr, Dr. on the application of a plumb- 

 line to the tranfit inftrument, 310 



W. 



Walker, Ezekiel, his experimental exa- 



INDEX. 



initiation of the piumb line and fplnt-i 

 level, 309 



Walker, Mr. William, on the planet 

 Ceres> 317 



Ware, Mr. James, On a cafe of recovery 

 from blindnefs, 57 



Water, whether it be in truth decompofed 

 by galvanifm, 198.— Raifld by a new 

 and powei ful engine of Trevithack, 1 6 r 



Wax, vegetable, 275. — From fpiders, 299 



Weather, Capper on the caufes that in- 

 fluence it, 275 



Welter, 119 



Wenzel, Baron de, 64 



Whifkers, their ufe in quadrupeds, 154 



Wind, or gas, from the fun's body, 15 



Winds, Coh Capper on the, 75 



Wiegleb, 1 14 



Winthorp, Mr. 32 



Wire, the fmalleft fize, 319.' — Remark* 

 able fact that the powerful lens of Par- 

 ker does not burn it if very flcnder, ib. 



Wire, edge, 49 



W. N. on the procefies of common life* 

 Art of Shaving, 47. — Againft Volta's 

 theory, 143 — Analyfis of Clofe's hy- 

 draulic engine, 145. — His account of the 

 appearance of phantoms in the Phan- 

 . tafmagoria, 147 



Woodford, Mr. 60 



Young, ©1. Syllabus of a courfe of lec- 

 tures on natural philofophy, 239 

 Yvart, 157 



Z. 



Zach, von, on the planet Ceres, 193. — 

 His letter to Mr. Edward Troughton on 

 the new planet Cerer, 287, 318 



Zoonic acid ftated to be merely the ace- 

 tous, 238 



IKD OF THE FIRST VOLUME. 



Printed by \V. Stratford, Crown-Court, Temple-Bar. 



