CONTENTS. Ill 



XXIII. ""On the Cultivation of Roses, and the Manufacture of 



Rose- Water and Attar or Otto, at Ghazeepore, 326 



XXIV. Observations on the Temperature of Plants. By M. 



Van Beck, . - . . .331 



XXV. On the Examination of Mountains and Plains, with 

 the view of discovering previously unknown Repo- 

 sitories of useful Minerals. By the late Frederick 

 Mohs, Councillor of Mines at Vienna, and Knight 

 of the Royal Saxon Order of Civil Merit, &c. 334 



XXVI. On the Law of Storms, as communicated to the Ame- 

 rican Journal of Commerce. By W. C. Redfield, 

 Esq. of New York, . . . .361 



XXVII. Notes explanatory of some Passages in Professor Keil- 



hau's Paper on Granite, &c., published in vols. 

 xxiv. and xxv. of this Journal, . . . 366 



XXVIII. Remarks on Professor Keilhau's Theory of Granite, 



&c. By Baron Jacob Berzelius, . .371 



XXIX. Presentation of the Wollaston Medal for 1 840 to M. 

 Dumont, and one year's proceeds of the Wollaston 

 Fund to Mr James de C. Sowerby, by the Geolo- 

 gical Society, ..... 379 

 XXX. Arrangement of Minerals, founded upon Physical 



and Chemical Characters, . . . 383 



XXXI. Notice respecting the Fall of an Aerolite, near Juvi- 

 nas, in the Department of the Ardeche, in France, 

 witnessed on the 15th June 1821. By Professor 

 Forbes. Communicated by the Author, . 385 



XXXII. Observations on the Geology of Scandinavia and 

 Spitzbergen. Communicated to the Imperial Aca- 

 demy of Sciences at St Petersburgh, . . 387 



XXXIII. Notice of Greenockite, a new Mineral Species of the 



Order Blende, . . • • .390 



XXXIV. Chemical Examination of Greenockite, or Sulphuret 



of Cadmium. By Arthur Connell, Esq. F.R.S.E. 

 Communicated by the Author, . . 392 



XXXV. New Observations on the Effects of Veins of Quartz. 

 By M. Rozct. Communicated to the Academy of 

 Sciences, ..... 395 



XXXVI. Description of several New or Rare Plants which liave 

 lately Flowered in the Neighbourhood of Edin- 



