CONTENTS. 



Pages 

 Art. I. Biographical Memoirs of Charles Bonnet and Ho- 

 race Benedict de Saussure. Read to the Royal 

 Institute of France by Baron CuviER, - 213 



II. A Description of some appearances of remarkable 

 Rainbows. By the Reverend William Scoresby, 

 F. R. S. Lond. & Edin. M. W. S. &c. Communi- 

 cated by the Author. (With a Plate), - 235 



III. Tour to the South of France and the Pyrenees, in 



1825. By G. A. Walker Arnott, Esq. A.M. F.L.S. 

 & R. S. E. &c. In a letter to Professor Jameson. 

 (Continued from the preceding Volume), - 241 



IV. Account of a Visit to the Glaciers of Justedal, and to 



the Mantle of Lodal. By Mr G. Bohr, of Bergen, 255 

 V. Observations on Serpentine and Diallage Rocks. By 

 Dr A. Boue'. In a Letter to Professor Jameson. 

 Communicated by the Author, - - 265 



VI. Observations on the Natural History of the Alligator. 

 In a Letter to Sir William Jardine, Baronet, and 

 Prideaux John Selby, Esq. By John J. Audu« 

 BON, Esq. Member of the Wernerian Natural His- 

 tory Society, &c. - - - - 270 

 VII. Observations and Experiments on the different kinds 



of Coal. By M. Karsten, - - - 280 



VIII. Considerations regarding the shining of the Eyes of 

 the Cat, and several other Animals. By M. Bene- 

 dict Prevost, - - * . 297 

 IX. Remarks on the Rhubarb of Commerce, the Purple- 

 coned Fir of Nepal, and the Mustard Tree. By Mr 

 David Don, Librarian of the Linnean Society, 

 Member of the Imperial Academy Naturae Curio- 

 sorum, of the Wernerian Society, &c. Communi- 

 cated by the Author, - - , SO* 



