CONTENTS. 



PAdB 



Art. I. Biographical Sketch of the late Robert Stevenson, 

 Esq., F.R.S.E., Member of tiie Wernerian Natural 

 History Society, Fellow of the Geological Society, 

 &c., Civil Engineer. By his Son Alan Steven- 

 son, LL.B., F.R.S.E., Civil Engineer. Com- 

 municated by the Author, . . . . 193 



II. On the Connection between the Colour of Substances 

 and their Magnetic Properties. By Richard 

 Adie, Esq., Liverpool. Communicated by the 

 Author, 209 



III. On the Physiognomy of the Islands in the Pacific. 



By Mr James D. Dana, . . . . 217 



IV. On the Cause of the Phenomena exhibited by the 



Geysers of Iceland. By Stevenson Macadam, 

 Teacher of Chemistry, Philosophical Institution, 

 Edinburgh. Communicated by the Author, . 222 



V. On the Electrical Phenomena of certain Houses. By 

 Elias Loomis, Professor of Mathematics and 

 Natural Philosophy in New York University, 225 



VI. On the Principles of Classification in Zoology. By 



Professor L. Agassiz, .... 227 



