vi CONTENTS. 



Pa s e 

 Analytical and Critical Account of A Critical Examination of the First 



Principles of Geology. By G. B. Greenough 30 1 



Death of Mr. Watt 309 



Professor Playfair 310 



Method of rendering Glass less brittle 311 



On the different Quantities of Rain collected in Rain- Gauges at different 



Heights. By Mr. Meikle 312 



Meteorological Observations at Cork. By T. Holt, Esq. (With a Plate.) 313 



Scientific Establishments in Ireland 314 



Volatility of Oxide of Lead 314 



Queries respecting the Velocipede 315 



Col. Beaufoy's Astronomical, Magnetical, and Meteorological Observa- 

 tions, for August 3 1 6 



Mr. Howard's Meteorological Journal for August 319 



NUMBER LXXXIII.— NOVEMBER. 



On the Oxides and Salts of Mercury. By Mr. Donovan, {concluded) .... 321 

 Reply to Mr. Meikle on Centrifugal Force. By the Rev. Patrick Keith. . 331 

 Experiments on the Gas from Coal. By William Henry, M.D. F.R.S. . 335 

 On the Chemical Constitution of Acids, Alkalies, and their Compounds. 



By Dr. Murray (concluded) 344 



On a new Acid formed of Sulphur and Oxygen. By MM. Welter and 



Gay-Lussac 352 



On propelling Vessels by Means of Windmill Sails. By J. M. Bartlett. . 356 

 On a fine Purple Oil Colour. By his Excellency the Count Le Maistre. 36l 

 Some Observations on the Action of Nitric Acid on Lithic Acid. By Dr. 



Prout, F.R.S 363 



Analytical and Critical Account of A Critical Examination of the First 



Principlesof Geology. By G. B. Greenough (continued) 365 



Proceedings of the Royal Academy of Sciences 373 



Chalk in Bulgar'n 381 



Mount Ha?mus 381 



Moscow 381 



Bathing in the Dead Sea 38 1 



Climate of Moscow 382 



Population of Moscow 382 



New Acetate of Lead 382 



Remarkable Double Rainbow. By Mr. Macome 384 



Octahedrul Iron Ore 384 



Juice of Carrots as a Remedy in Cancer 385 



Analysis of Galbunum 385 



Action of Binoxal.ito of Potash on Black Oxide of Mangonese 386 



Meteorological Jounul made at Cork. By T. Holt, Esq. (With a Plate.) 386 



Method of preserving Water at Sea 387 



New Method of preparing Pharmaceutical Extracts. Bv John Barrv. Esq. 387 



