INDEX. 



page 



Ulmiih English, experiments on it, - - 68 



Vesuvius, Mount, on a saline substance from it, - 556 



Vision, an appendix to Mr. Ware's paper on that subject, J 10 

 Vitreous humour, its absorption probably the cause of amended 



vision in old persons, ^ - - 42 



w 



Ware, James, Es(i. His observations relative to the near 



and distant sight of different persons, - - 31 



Wires, on a method of drawing them extremely fine, - II4 



WoLLASTON, William Hyde, M.D. Bakcrian lecture, on 



the elementary particles of certain crystals, - -61 



On a method of 



freezing at a distance, - - - 71 



. — — ■ Method of drawins: 



extremely fine wires, - - H4 



His description of 



a single lens micrometer, - • • lliQ. 



. CORRIGENDA. 



Page 175, line i^jfor one -fourth — read one- third 



177, — — iTfJor preponderates over that ot either the olive oil or phosphorus—' 

 readht exceeded by that of the alcohol of sulphur. 



246, — ♦— 10, after attraction of— add the azote of 



•' 2^, for produced — read produced,— and dele the comma after portion 



■■■■■ 249, 1 1, for 261. — read 268. 



264, — - iS, for the other— read the other of which 

 — — 268, — — 15, /or bases, — read basis 

 — — 273, . 1 1, for metal, positively electrified— r*ad metal positively electrified. 



From Ibe Press of 



IV. DULMER^ Co. 



Cleveland row, St. James's, 



London. 



o 



