.^'^^ 



Vot. 41. 



Philosopliical Magazine. February 



Contents of Number 178. 



Page. 



XIII. An Attempt to determine the definite and Simple 

 Proportions, in which the constituent Parts of unotganic 

 Substances are united with each other. By JicoB Berze- 

 Lius, Professor of Medicine and Pharmacy, and M,R. A. 



iStockholni ... 



XIV. Observations on the Measurement of tliree Degrees 

 of the Meridian, conducted in England by Lieutetiant-Col. 

 William MuDGE. ByDon Josbph Rodriguex. Com- 

 municated by Joseph dbMendoza Rios, Esq. F. R. S 



XV. Oil the Formation of Sulphur in India. By Ben- 

 jAMiN Heyne, M.D. Botanist and Naturalist to the Hon. 

 East India Company, and Surgeon in the Madras Army 



XVI. Of such Portions of a Sphere as have their Attrac- 

 I tion expressed by an algebraic Quantity 



XVII. Of Coffee, and the Art of preparing it. Ex- 

 tracted from Count Rum ford's Eighteenth Essay - 



XVIIIi Sortie Remarks on the Use of Nitrat of Silver, 

 for the Detection of minute Portions of Arsenic. By Alex. 

 Ma^cet, M.D. F.R.S. one of the Physicians to Guy's 

 Hospital *---.*-.. 



XIX. On a Periscopic Camera Obscuta and Microscope. 

 [By William Hyde Wollaston, M.D. Sec. R.S. 



XX. M. Ficuier's new Process for depriving Vinegar 

 and other Vegetable Liquids of their Colour 



XXI. Notice respecting some Experiments on Alcohol ; 

 read before the Edinburgh Institute 2d February 1813. By 



[Mr. HuTTON - •> - . - .. 



XXII. A Comparative Scale of the Thermometers of 

 Celsius, or the Centigrade, — Reaumur, — Fahrenheit, and 

 Walker - - 136 



XXIII. Proceedings of Learned Societies ... 133 



XXIV. Intelligence and Miscellaneous Articles.— Mete- 

 orological Table, &c. 15*— 160 



*»* Communications for this Work, a ddressed to the Editor, | 

 JPickeft- Place, Temple Bar, will meet with every attention. 



81 



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101 1 



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108 1 



121 



I24I 



129 



130, 



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