CONTENTS. Ill 



PAGE 



XVIII. On the Liiminoiisness of the Earth. By Baron 



Alexander von Humboldt, .... 339 



XIX. On the Rocks said to be Older than the Oldest Fos- 



siliferous Deposits, 341 



XX. Synopsis of the Fall of Rain in the Lake District of 

 Cumberland, for Twelve Months, commencing the 

 1st day of July 1844, and ending the 30th day of 

 June 1845, 345 



XXI. Observations on the Temperature and Moisture of 

 the Atmosphere, and on the Temperature and 

 Specific Gravity of the Surface Water of the 

 Northern Atlantic. By Robert Lawson, Assist- 

 ant-Surgeon, 47th Regiment. Communicated by 

 the Author, 34? 



XXII. On the occurrence of Phosphoric Acid in Simple 



Minerals and Rocks, ..... 357 



XXIII. On the Analogies observed in Chemical Unions. By 

 Arthur Connell, Esq., F.R.S.E., Professor of 

 Chemistry, University of St Andrews. Commu- 

 nicated by the Author, .... 359 



XXIV. On the Diluvial Epoch. By Professor F. J. Pic- 



tet of Geneva, ....;. 368 



XXV. On the Ancient Inhabitants of the Canary Islands. 

 By Thomas Hodgkin, M.D. Communicated for 

 the Edinburgh New Philosophical Journal by the 

 Ethnological Society, 372 



XXVI. On Lunar Periodicities in Earthquakes, and remark- 

 able Atmospherical Phenomena. By Richard 

 Edmonds jun., Esq. Communicated by the Author, 386 



XXVIII. Scientific Intelligence : — 



METEOROLOGY. 



1. The Temperature of Rain-Drops. 2. On the Height 

 of the Snow-Line in India. 3. A violent Hail Storm. 

 4. The Effects of Great Droughts. 5. Formation 

 of Clouds. ..... 389 



