CONTENTS. V 



Page 



New Scientific Books 237 



New Patents 238 



Mr. Howard's Meteorological Journal for January 039 



NUMBER IV.— APRIL. 

 Account of a new Mineral. By Mr. A. Levy, MA. of the University of 



Paris , 24 1 



On the Mathematical Principles of Chemical Philosophy {concluded). 



By the Rev. J. B. Emmett 243 



On those Minerals which possess the same Crystalline Form as Pyroxene. 



By H. Rose (concluded) 259 



Experiments and Researches on the Saline Contents of Sea-water. By A. 



Marcet, MD. FRS 261 



Astronomical Observations. By Col. Beaufoy, FRS 266 



Meteorological Register kept at Cornwall, for 1822. By E.G. Giddy, 



Esq 267 



On the Pontefract Sandstone Rock. By Mr. John Farey 270 



Memoir illustrative of a general Geological Map of the principal Moun- 

 tain Chains of Europe. By the Rev. W. D. Conybeare, FRS. &c. &c. 



(continued) ■ 278 



On the Effect of Heat and Compression. By M. de la Tour 290 



Analytical Account of the Transactions of the Royal Geological Society of 



Cornwall, Vol. II 294 



Proceedings of the Royal Society, Feb. 20, 27, March 6, and 13 300 



Linnean Society, Feb. 4, 18, March 4, and 18 305 



— Geological Society, Jan. 3, Feb. 21, March 7, and 21. 306 



Astronomical Society, March 14 308 



Mr. Faraday's Liquefaction of the Gases 309 



Re-opening of Mr. Sowerby's Museum 30g 



On Rocks that contain Magnesia 309 



Existence of Metallic Veins in the Transition Limestone of Plymouth .. 310 



On the Depression of the Barometer in December, 1821 311 



Alkohometrical Application of the Thermometer 313 



On a new Mineral, named Chloropal 313 



On the Galvanic Ignition of Charcoal 314 



On a Mineralogical Work of Agricola, &c 315 



New Scientific Books 3l6 



New Patents 318 



M r. Howard's Meteorological Journal for February 3 j g 



NUMBER V.— MAY. 



Additional Remarks on the RotheTodte Liegende and Weiss Liegende of 



German Geologists. By T. Weaver, Esq. MRIA. MRDS. MWS. &c. 321 

 On the Crystalline Form of Ice. By James Smilhson, Esq. FRS, 340 



