CONTENTS. 



Art. I. Researches on the Electrical Currents in Metallife- 

 rous Veins, made in the mine of " Hinimelfahrt," 

 near Freyberg. By Professor F. Reich of Frey- 

 berg. Communicated by the Author, . 1 



II. On the Glaciers of the Alps. By M. J. Andre' 



DE Luc, ..... 15 



III. On the Lauras Cassia of Linnseus, and the Plants 

 producing the Cassia Bark of Commerce. By 

 Robert Wight, M. D. . . . 20 



IV. Observations on Cinnamon. By Henry Marshall, 



F.R.S.E., Deputy Inspector-General of Hospitals, 72 



V. On the Transverse Valleys or Openings in Chains 



of Mountains, which afford a Passage to Rivers. 

 By M. J. Andre' de Luc, . . 32 



VI. On Rivers which break through Mountain-Chains. 



By the late Professor Hoffman of Berlin, 42 



VII. Abstract of a Paper read to the Society of Arts, 

 by Sir John Robison, entitled, " A, Narrative 

 of Experiments and Suggestions, by the late Mr 

 James Taylor, for the Application of Steam to 

 Navigation ;" with Introductory Remarks by Sir 



