CONTENTS OF N" 39.— A^m Series. 



XXIII. Notes on the Formation of extensive Conglomerate and 

 Gravel Deposits. By Henry T. De la Beche, F.R.S. &c, (With 



a Plate) page 161 



XXIV. On the Construction and Arrangement of the Berlin Astro- 

 nomical Ephemeris for 1831. By Prof. Encke 172 



XXV. On Artificial and Natural Arrangements of Plants : and 

 particularly on the Systems of Linnaeus and Jussieu. By William 

 RoscOE, Esq. F.L.S 180 



XXVI. On the Fossil Trees found in Jefferies Rake Vein at Der- 

 went Lead Mine in the County of Durham. By Mr. H. L. Pattin- 

 SON, Assay-Master to the Commissioners of Greenwich Hospital in 



the Manor of Alston Moor, Cumberland 185 



XXVII. Observations on some Parts of Mr. De la Beche's Paper 



on the Classification of the European Rocks. By A Correspondent 189 



XXVIII;' Specific Characters of Ct/gnus Bexvickii and C.fertis. 

 fey W. Yarrell, Esq. F.L.S. &c .• 194. 



XXIX. On the Geology of Havre. By John Phillips, Esq. 

 F.G.S. &c. &c 195 



XXX. On the Position of Rocks in the Geological Series, whence 

 the Salt Brine is derived, in the State of New York, North America. 



By A Correspondent 1 98 



XXXI. 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 Henrt 



T. De la Beche, F.R.S. &c. ( To be continued.) 202 



XXXII. Proceedings of Learned Societies: — Royal Society; 

 Linnaean Society; Geological Society ; Friday-Evening Proceedings 

 at the Royal Institution of Great Britain ; Yorkshire Philosophical 

 Society ; Astronomical Society 206-226 



XXXIII. Intelligence and Miscellaneous Articles : — Electrical 

 Formation of Crystallized Sulphuret ; Sir Humphry Davy and Dr. 

 Wollaston ; Analysis of Siliceous Minerals by Alkaline Carbonates ; 

 Examination of some Minerals by M. Victor Hartwall ; Improve- 

 ment in the Smelting of Iron ; New Vegeto-alkalies obtained from 

 Cinchona; Analysis of Indigo; Process for procuring Bromine; 

 Elastic Power of Steam; Compounds of Iodine; Manufacture of 

 Paper from Ulva marina ; List of New Patents ; Meteorological 

 Observations, and Table 226—240 < 



%• It is requested that all Communications for this Work may be addrewed, 

 post paid, to the Care of Mr. R.Taylor, Printing Office, Red-Lion-Court, 

 Fleet-Street, London ; where complete Sets of the Old Series of tb« Phi- 

 lo5ophical Magazine, may be had at half of the original price. 



