IV CONTENTS OF VOL. XI. — FOURTH SERIES. 



Page 

 M. Du Bois Reymond on a Method of exhibiting fine Galvano- 



metric Experiments to a large audience 109 



The Rev. S. Haughton on the Solar and Lunar Diurnal Tides 



of the Coasts of Ireland {continued) Ill 



Prof. Tyndall on the relation of Diamagnetic Polarity to Mag- 



necrystallic Action 125 



M. Schiinbein on Ozone and Ozonic Actions in Mushrooms . . 137 

 Prof. Wcihler and Dr. Atkinson's Analysis of the Meteorites of 



Mezii-madaras in Transylvania 141 



M. Ch. Sainte-Claire Deville on the Density of certain Sub- 

 stances (Quartz, Corundum, Metals, &c.) after fusion and 



rapid cooling 144 



Proceedings of the Royal Society 146 



Geological Society 163 



On the cause of the Phosphorescence of the Agaric of the Olive, 



by M. Fabre .165 



On a Process of Engraving in Relief on Zinc, by J. Devincenzi. 166 



Meteorological Observations for December 1855 167 



Table 168 



NUMBER LXXL— MARCH. 



Mr. Nicholson and Dr. Price on the Estimation of Sulphur in 

 Iron, and on the Solubility of Sulphate of Baryta in Nitric 



Acid 169 



Mr. E. W. Davy on some Experiments made with a view to 

 determine the comparative Value of Peat and Peat-charcoal for 



Agricultural purposes 172 



Prof. Magnus's Hydraulic Researches {concluded). (With a 



Plate.) 178 



Mr. R. P. Greg on the Crjstalline Form of Rhodonite 196 



Dr. Atkinson's Chemical Notices from Foreign Journals. ..... 197 



Mr. R. W. Pearson on the Determination of Bismuth by Weight 



and by Volume 204 



Prof. W. Thomson on the Dynamical Theory of Heat. — Part VI. 



Thermo-electric Currents 214 



Mr. W. R. Grove's Experiments showing the apparent Con- 

 version of Electricity into Mechanical Force 225 



Proceedings of the Royal Society 227 



■ Geological Society 237 



Cambridge Philosophical Society 240 



On the Direction of the Vibrations of the -^ther in the case of 



Polarized Light, by M. Haidinger 242 



On the Incandescence of Metal Wires in Alcoholic Vapour, by 



H. Rcinsch 246 



Meteorological Observations for January 1856 247 



Table 248 



