CONTENTS. Vll 



Page 

 Dr. Hare on the Theory of Storms, with reference to the 



Views of Mr. Redfield 423 



Prof. Booth on the Rotation of a rigid Body round a fixed 



Point 432 



Mr. R. Hunt on the Conversion of the Bisulphuret of Copper 

 (Yellow Copper Ore), into the Sulphuret (Vitreous Copper) 



by Electricity 442 



Prof. De Morgan on the History of Fernel's Measure of a Degree 445 

 Messrs. W. Francis and H. Croft's Notices of the Results of 



the Labours of Continental Chemists (continued) 447 



Mr. T. B. Jordan's Remarks on Electro-Metallurgy 452 



M. Dumas on the Chemical Statics of Organized Beings (con- 

 cluded) 456 



Mr. J. E. Bowman on the question, Whether there are any evi- 

 dences of the former existence of Glaciers in North Wales ? 469 

 The Rev. R. Murphy's Calculation of Logarithms by means of 



Algebraic Fractions 479 



Mr. H. Reinsch on the Action of Metallic Copper on Solutions 

 of certain Metals, particularly with reference to the detection 



of Arsenic 480 



Proceedings of the Royal Society 483 



Geological Society 489 



Mr. Brayley's Lectures on Igneous Meteors and Meteorites . . 500 



Action of Sulphuric Acid on Protosulphate of Iron ' 502 



Books 503 



Meteorological Observations for October 1841 503 



_ Table 504 



NUMBER CXXVIL— SUPPLEMENT TO VOL. XIX. 



Mr. Airy on an extraordinary Magnetic Disturbance recently 



observed at Greenwich 505 



Dr. Ure's Table of the successive Strengths of Pyroxylic Spirit, 

 corresponding to its successive Specific Gravities, with some 



Introductory Observations 511 



The late R. C. Campbell on the Ferrocyanides 513 



Proceedings of the Royal Society 517 



> Geological Society 522 



1 Royal Astronomical Society 547 



Royal Irish Academy 584 



Dr. Martin Barry on the Corpuscles of the Blood 597 



Composition of Mellitic Acid 598 



Salts of Lead containing Acids of Oxygen and Azote 598 



Mr. Halliwell's Inquiry respecting a MS. at Oxford, referred 

 to by Mr. Rutherford in his Paper on the Ratio of the Dia- 

 meter of a Circle to its Circumference 600 



Index 601 



