CONTENTS. 



NUMBER XXXIX.- MARCH. 



Page 

 Mr. De la Beche's Notes on the Formation of extensive Con- 

 glomerate and Gravel Deposits 161 



Prof. Encke on the Construction and Arrangement of the Ber- 

 lin Astronomical Ephemeris for 1831 172 



Mr. Roscoe on Artificial and Natural Arrangements of Plants ; 



and particularly on the Systems of Linnaeus and .lussieu. . . . 180 

 Mr. H. L. Pattinson on the Fossil Trees found in Jefteries Rake 



Vein at Derwent Lead Mine in the County of Durham. . . . 185 

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



the Classification of the European Rocks 189 



Mr.Yarrell's Specific Characters of CygniisBeviickii and C. Ferus 194 



Mr. J. Phillips on the Geology of Havre 195 



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

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



America 1 98 



Mr. De la Beche's Notes on the Geographical Distribution of 

 Organic Remains contained in the Oolitic Series of the Great 

 London and Paris Basin, and in the same Series of the South 



of France (cotithiued) 202 



Proceedings of the Royal Society 206 



Linnsean Society 206 



■ Geological Society 207 



at the Friday- Evening Meetings of the Royal In- 

 stitution of Great Britain 211 



■ Yorkshire Philosophical Society and New 



Museum 213 



Astronomical Societ)' 223 



Electrical Formation of crystallized Sulphuret 226 



Sir Humphry Davy and Dr. Wollaston 228 



Analysis of Siliceous Minerals by Alkaline Carbonates 231 



M. Victor Hartwall's Examination of some Minerals 232 



Improvement in the Smelting of Iron — New Vegeto-Alkalies 



obtained from Cinchona 233 



Analysis of Indigo — Process for procuring Bromine 234 



Elastic Power of Steam — Compounds of Iodine 235 



Manufacture of Paper from Ulva marina 236 



New Patents 237 



Meteorological Observations 238 



NUMBER XL.— APRIL. 



Mr. Ivory's Letter relating to the Figure of the Eartii 241 



Dr. Fr. W. Schweigger-Seidel on the Blue Colouring-matter 



of Lapis Lazuli, and on artificial Ultramarine 244 



Mr. 



