CONTENTS. V 



Page 

 Dr. H. Kopp on a great Regularity in the Physical Properties 



of analogous Organic Compounds 187 



Mr. Ivory on the Constitution of the Atmosphere 197 



The Rev. M. O'Brien on the Propagation of Luminous Waves 



in the Interior of Transparent Bodies 201 



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



the Labours of Continental Chemists (continued) 216 



Prof. H. W. Dove's Experiments in Electricity and Magnetism 225 

 Mr. W. Rutherford's Reply to the Inquiry in the Supplement 



Number of the Philosophical Magazine for January 1842, 



respecting a Manuscript at Oxford on the Rectification of the 



Circle 229 



Prof. De Morgan on Femel's Measure of a Degree, in reply to 



Mr. Galloway's Remarks • • • 230 



Prof. P. Savi's Considerations on the Insalubrity of the Air of 



the Maremma 233 



Mr. J. Drummond's Table of Shocks of Earthquake, from 



September 1839 to the end of 1841, observed at Comrie, 



near CrieiF 240 



Proceedings of the Royal Society 248 



. London Electrical Society 262 



Action of Nitrate of Lead on Oxamide — Trisoxalate of Lead, by 



M. Pelouze 262 



Meteorological Observations for Januarjr 1842 263 



Table 264 



NUMBER CXXXI.— APRIL. 



Prof. Liebig on the Preparation of Cyanide of Potassium, and 



on its Applications 265 



Dr. J. Stenhouse's Examination of Cetine, Ethal, Oils of Laurel 



Turpentine, Hyssop, and Assafcetida 271 



Mr. Ivory on the Constitution of the Atmosphere 278 



The Rev. Prof. Challis's Discussion of a new Equation in Hy- 

 drodynamics 281 



Sir W. R. Hamilton on certain discontinuous Integrals, con- 

 nected with the Development of the Radical which represents 



the Reciprocal of the Distance between two Points, 288 



Prof. Daniell on the Constant Voltaic Battery 294 



Mr. Earnshaw on the Theory of the Dispersion of Light 304 



The Rev. R. Murphy on Atmospheric Refraction 310 



Prof. W. H. Miller on the Composition of Wolfram 312 



Mr. J. O. Halliwell's New Particulars relating to Nathaniel 



Torporley's attack u))on Vieta, the celebrated Analyst .... 313 

 Dr. J. Scherer's Abstract of Chcmico-Physiological Researches 314 



