iv CONTENTS OF VOL. XXXII. — THIRD SERIES. 



NUMBER CCXIII.— FEBRUARY. 



Page 



Sir J. W. Lubbock on Shooting Stars 81 



Mr, A. Claudet on different Properties of Solar Radiation pro- 

 ducing or preventing a deposit of Mercury on Silver Plates 

 coated with Iodine, or its compounds with Bromine or Chlo- 

 rine, modified by Coloured Glass Media and the Vapours of 



the Atmosphere 88 



Prof. J. R. Young on the Combination of the Theorems of 



Maclaurin and Taylor 98 



Dr. J. W. Draper on the Production of Light by Chemical Action 100 

 Mr. J. Cockle's Account of the Method of Vanishing Groups. . 114 

 Dr. R. P. Cotton's Observations on the Geological Age of Bone- 

 Caverns 119 



Mr. J. Drink water on the Preparation of absolute Alcohol, and 



the Composition of " Proof-Spirit " 123 



Mr. J. Glaisher's Remarks on the Weather during the Quarter 



ending December 31, 1847 130 



Mr. H. E. Strickland on the present state of Knowledge of the 



Geology of Asia Minor 137 



Proceedings of the Royal Society 139 



Cambridge Philosophical Society 141 



Royal Astronomical Society 144 



Analysis of a Hydrated Silicate of Alumina, by MM. Damour 



and Salvetat 149 



On the Action of Chlorine on Benzoate of Potash, by M. Saint- 



Evre 151 



Action of Chlorine on Cyanide of Mercury, by J. Bonis 152 



Frigorific Mixture 153 



Researches on Phosphorus, by M. P. Thenard 153 



On Christianite — a New Mineral 155 



On the Identity of Metacetonic and Butyro- Acetic Acids — Pro- 

 pionic Acid, by MM. Dumas, Malaguti and F. Leblanc 156 



On the Composition and Properties of Nicotina 158 



Meteorological Observations for December 1847 159 



Table 1 60 



NUMBER CCXIV.— MARCH. 



Sir D. Brewster on the Distinctness of Vision produced ia cer- 

 tain cases by the use of the Polarizing Apparatus in Micro- 

 scopes ._ 161 



Prof. Faraday on the Use of Gutta Percha in Electrical Insula- 

 tion 165 



The Rev. J; Challis on the Course of a Ray of Light from a 

 Celestial Body to the Earth's Surface, according to the Hy- 

 pothesis of Undulations 168 



Sir J. W. Lubbock's Note on Shooting Stars ... 170 



