CONTENTS. vU 



VI. Report made to the Clafs of Phyfical and Mathematical Sciences of the In- 

 ftitute of France, by Citizens Guyton and Vauquelin, on a Memoir of Citizen 

 Thenard, entitled, " Obfervations on the Combination of the Tartareaus Acid, 



^ with the Salifiable Bafes, and tiie l*roperties of the Salts thus produced." 



p. 268 



VII. On the Produftion of artificial Cold by Means of Muriate of Lime. By 

 Mr. Richard Walker. (Philof. Tranf. 1801.) (Concluded from page 227.) 



p. 272 



Scientific News, Accounts of Books, Sic. - - p. 277 — 280 



- .1 



PliiloCophical Tranfaflions of the Royal Society of London for the year 1801.— Extraft from the 

 Notice of the Works of the C!a("s of Mathematical and Phyfical Sciences, of the National la- 

 ftitute of France during the third Trirneiiry of the ninth year. 



NOVEMBER 1801. 



Engravings of the foHowing Objefts: 1. Various Defigns and Apparatus re- 

 lating to the Strufture and Ufes of the Eye ; and, 2. An univerfal Support for 

 Balances of every Defcription. 



I. Outlines of Obfervations relating to the Nitrous Oxide, or Dephlogifticated 

 Nitrous Air. By Mr. Davy, Direftor of the Chemical Laboratory, and Lec- 

 turer on Chemiftry in the Royal Xnftitution. - - p. 281 



II. Obfervations on the fuppofed Magnetic Property of Nickel, by Richard 

 Chenevix, Efq. F.R.S. and MIR.I.A. Communicated by the Author, p., 287 



III. On the Mechanifm of the Eye. By Thomas Young, M.D. F.R.S. (Con- 

 tinued from page 2tiu.) ----- p. 289 



IV. Defcription of a Support applicable to Balances of all Dimenfions, and 

 proper to render the Operations performed with thefe Inftruments more ex- 

 peditious and convenient without afle£ting their Prccifion. By R. Prony, of 

 the National Inftitutc of France. - - - " ?• 303- 



V. On the Combination of the Metals with Sulphur. By Citizen Vauquelin. 



p. 307 



VI. Notice refpefting the extenfive Logarithmic and Trigonometrical Tables, 

 calculated under the Direction of Citizen Prony, Member of the National 

 Inftitute, &CC. and of the Report concerning the feme. By Citizens La Grange,. 

 Laplace, and Delambre. - - - p. 3 II 



VII. Ob" 



