i CONTENTS. 



Page 

 X. Notice regarding the Asphaltum or Pitch Lake of- Tri- 

 nidad. By Captain J. E. Alexander, 42d Royal 

 Highlanders, F. R. G. S., M. R. A. S., &c. Com- 

 municated by the Author, - - - 94 

 XI. On the Youth, Age, Diseases, Sleep, and Death, of 



Northern Birds. By Frederick Faber, - 97 



XII. Sketch of the Life of A. H. L. Heeren, Knight of 



the North Star and Guelphic Orders, Aulic Coun- 

 sellor, and at present Professor of History in the 

 University of Gottingen, &c. &c. - - 104 



XIII. On the Malaria of the Campagna di Roma, - 114 



XIV. Observations on a Collection of Fossil Bones sent to 



Baron Cuvier from New Holland. By William 

 Pentland, Esq. In a Letter to Professor Jame- 

 son, 120 



XV. Geological Remarks upon the Neighbourhood of the 



Caspian Sea. By M. Eichwald of Wilna, - 122 

 XVI. On the Limit of the Law of Symmetry, and the 

 Forces which determine the actual Forms of Inor- 

 ganic Bodies. Communicated by the Author, - 132 

 XVII. A few Remarks on the Relation which subsists be- 

 tween a Machine and its Model. By Edward 

 Sang, Teacher of Mathematics, Edinburgh. Com-' 

 municated by the Author, - - - 145 



XVIII. On Fossil Woods from Newcastle, New South Wales. 

 With a Plate. By William Nicol, Esq., Lec- 

 turer on Natural Philosophy. Communicated by 

 the Author, - - - - - 155 



XIX. On the Coniferae at present growing in Australia. By 

 David Don, Esq. F. L. S. Communicated by the 

 Author, - - - - - 158 



XX. On Naval Tactics. By Major-General Sir Howard 



Douglas, - - - - 159 



XXI. Description of several New or Rare Plants which have 



lately flowered in the neighbourhood of Edinburgh, ' 

 and chiefly in the Royal Botanic Garden. By Dr 

 Graham, Professor of Botany in the University of 

 Edinburgh, - - - - 173 



XXII. Celestial Phenomena from January 1. to April 1. 1833, 

 calculated for the Meridian of Edinburgh, Mean 

 Time. By Mr George Innes, Astronomical Cal- 

 culator, Aberdeen, - - - 177 



