ii CONTENTS. 



Art. X. General Observations on the former and present Geo- 

 logical Condition of the Countries discovered by 

 Captains Parry and Ross. By Professor Jameson, 104< 

 XI. Remarks tending to explain the Geological History 



of the Earth. By Professor Esm ark, - 107 



XII. Observations on the Structure and Functions of the 

 Sponge. By R. E. Grant, M.D. F.R.S.E. F.L.S. 

 M. W. S. Honorary Member of the Northern Insti- 

 tution, &c. Communicated by the Author. Con- 

 cluded from the preceding Volume, p. 351. With 

 a Plate „ - _ . 121 



XIII. Enumeration of the Instruments requisite for Me- 



teorological Observations ; with Remarks on the 

 mode of conducting such Observations. By Pro- 

 fessor Leslie, - - - - 141 



XIV. Description of the Eruption of Long Lake and Mud 



Lake, in Vermont, and of the desolation effected 

 by the rush of the waters through Barton River, 

 and the lower country, towards Lake Memphre- 

 magog, in the summer of 1810, in a Letter to Prof 

 Silliman. By the Rev. S. Edwards Dwight. 

 With a Plan of the Lakes, - - 146 



XV. Information regarding the Overland Arctic Expe- 

 dition, _ - - - i6i 

 XVI. On the Luminousness observed in the Eyes of Hu- 

 man Beings, and also in those of Cats, Dogs, 

 Horses, and Sheep. By Dr Charles Ludwig 

 ESSER, - - - - l64 



XVII. Account of the Habits of the Turkey Buzzard (Vul- 



tur aura), particularly with the view of exploding 

 the opinion generally entertained of its extraordi- 

 nary power of Smelling. In a Letter to Professor 

 Jameson, by John J. Audubon, Citizen of the 

 United States, - - - - 172 



XVIII. List of Rare Plants which have Flowered in the 



Royal Botanic Garden, Edinburgh, during the 

 last three months ; with Descriptions of several 

 New Plants. Communicated by Dr Graham, 184 

 XIX. Celestial Phenomena from January 1. to April 1. 

 1827, calculated for the Meridian of Edinburgh, 

 Mean Time. By Mr George Innes, Aberdeen, 188 



