TO CONTENTS, 



Page 

 Account of some Specimens of Rocks, &c. from Van Dicman's Land, and 



from New South Wales. By N. J. Winch, Esq 341 



Ore the Congelation of the Metals. By Mr. Longmire 343 



Astronomical Observations. By Col. Beaufoy, FRS, , 344 



On the Ultimate Analysis of Vegetable and Animal Substances. By An- 

 drew Ure, MD. FRS 344 



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) 356 



A Means of Discrimination between the Sulphates of Barium and Stron- 

 tium. Bv James Smithson, Esq. FRS 359 



Om the Temperature of the Coast of Africa. By Capt. Kelly, RN 360 



On the Height of the Barometer. By M. P. Moyle, Esq 376 



On the Ashmolean Catalogue of Extraneous Fossils. By Mr. J. Farey. . 378 

 A Description of the Crystalline Form of some new Minerals. By H. J. 



Brooke, Esq. FRS. and FLS. &c 881 



0it the Discovery of Acids in Mineral Substances. By James Smithson, 



Esq. FRS 384 



Analytical Account of Capt. Franklin's Narrative of a Journey to the 



Shores df the Polar Sea 387 



Proceedings of the Royal Society, March 20, and April 10 301 



Geological Society, April 4, and 18 395 



Astronomical Society, April 11 3g5 



Alkanet as a Test 395 



Analysis of the Mineral Waters of Carlsbad 396 



Fothergillian Prize Medal 396 



New Scientific Books 397 



New Patents 398 



Mr. Howard's Meteorological Journal for March 399 



NUMBER VI.— JUNE. 



On the Maximum Density of Water. By Mr. James Crichton 401 



On a Salt composed of Sulphuric Acid, Peroxide of Iron, and Ammonia. 



By Dr. Forchhammer 406 



Ou Clay-slate for Road-making. By Mr. W. Stokes 410 



On Gas Light Establishments. By Sir W. Congreve, Bart. FRS 411 



Oa the Development of Electromagnetism by Heat. By the Rev. J. 



Cumming, MA. FRS. and Professor of Chemistry in the University of 



Cambridge 427 



On the Practicability of an Operation for Phthisis Pulmonalis. By David 



Williams, MD - 429 



On M. Schweigger's Electromagnetic Multiplier, with an Account of some 



Experiments made with it. By Prof. Oersted 436 



Analysis of the Native Sulphate of Iron and Alumina. By R. Phillips, 



FRS. L. and E. &c 446 



