CONTENTS. ill 



Art. XXI. A Memoir regarding the Natural History of the 

 District of Alford in Aberdeenshire. By Alex- 

 ander Murray, M.D. Communicated by the 

 Author, - - - - 133 



XXII. The subjects of Prize Essays proposed by the 



Dutch Society of Science of Haarlem, - 148 



XXIII. General View of the Geology of India. By Wil- 



liam Calder, Esq. - - - 152 



XXIV. On some New Bodies which strongly absorb Light 



By M. OssAN, - - - - 158 



XXV. On the Modes of Preserving the Bodies of Ani- 

 mals in Fluids of different kinds, particularly 

 during Voyages and Travels, - - l60 



XXVI. Some Remarks on the Temperature of Springs. 



By Baron Leopold von Buck, - - l66 



XXVII. Account of a New Method of Filtering Water, in- 

 vented by James White, Esq. Engineer, 169 

 XXVIII. Description of several New or Rare Plants which 

 have flowered in the neighbourhood of Edin- 

 burgh, and chiefly in the Royal Botanic Garden, 

 during the last three months. By Dr Graham, 1 73 

 XXIX. Celestial Phenomena from January 1. to April 1. 

 1 829, calculated for the Meridian of Edinburgh, 

 Mean Time. By Mr George Innes, Aberdeen, 178 



XXX. Proceedings of Learned Societies. 



1. Royal Society of Edinburgh, - 180 



2. Wernerian Natural History Society, - ib. 



3. Linnean Society, - - - I8I 



XXXI. Scientific Intelligence. 



NATURAL PHILOSOPHY. 



1. On the Electrical Phenomena caused by the Rubbing of 

 Metals with each other. 2. On the Variation of the 

 Freezing Point in Mercurial and Spirit of Wine Ther- 

 mometers, - - - , - 183, 184 



METEOROLOGY. 



3. On the Weight of pure Atmospheric Air, - 134 



CHEMISTRY. 



4. On Efflorescence, - - - - 155 



MINERALOGY. 



5. Okenite, a New Species of Zeolite. 6, On the Compact , 



