CONTENTS OF N" 4:1. —New Series. 



XLV. Letter from the Rev. Dr. W. Buckland, F.R.S. &c. 

 Professor of Mineralogy and Geology in the University of Oxford, 

 on the Discovery of Coprolites in North America page 321 



XL VI. Observations on some late Statements by Mr. Farey re- 

 specting the Steam-Engines of Cornwall. By Wm. J. Kenwood, 

 F.G.S 323 



XLVn. Some general Considerations respecting the Propagation 

 of Motion through Elastic Mediums; with Remarks on a former 

 Communication. By J. Challis, Esq. Fellow of Trinity College 

 Cambridge, and of the Cambridge Philosophical Society 325 



XLVIH. On the Conversion of Right Ascension and Declination 

 into Longitude and Latitude, and vice versa. By Prof. Encke . . . 330 



XLIX. Notes on the Geographical Distribution of Organic Re- 

 mains contained in the Oolitic Series of the Great London and Paris 

 Basin, and in the same Series of the South of France. By Hekry 

 T. De la Beche, F.R.S. &c. ( To be continued. ) 334 



L. On M. Guinand's Glass for Telescopes. By M. Utz. 



SCHNEIDER 351 



LI. Proceedings of Learned Societies: — Royal Society; Lin- 

 nsean Society; Geological Society; Astronomical Society; Royal 

 Academy of Sciences of Paris 353—379 



LII. Intelligence and Miscellaneous Articles : — 

 Discussions in the French Royal Academy of Sciences, between 

 M. GeofFroy-Saint-Hilaire and the Baron Cuvier, respecting 

 the Unity of Organization in Animals, and the Analogies 

 by which they are connected. On Kermes Mineral, by M. 

 Gay-Lussac; Thorina and Thorinum, by Berzelius; Prepara- 

 tion of Magnesium ; New Native Compound of Carbonate of 

 Lime and Carbonate of Soda; Lunar Occultations of Fixed 

 Stars for May and June ; Results of a Meteorological Journal 

 for the Year 1829, by Dr. Wm. Burney; List of New Patents; 

 Meteorological Observations and Table 379 — 4-00 



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