it CONTENTS. 



PAGC 



XXII. The Ocean — its Currents, Tides, Depth, and the 



Outlines of its Bottom, . . . 152 



XXIII. On some Points in the Physical Geography of Nor- 



way, chiefly connected with its Snow-Fields and 

 Glaciers, . . . . .159 



XXIV. Ordnance Survey of Scotland, . . .170 

 XXV. Scientific Intelligence : — . . .176 



MINERALOGY. 



I. On the Formation of Crystallized Minerals. 

 By Aug. Frevermann. 2. Artificial Pro- 

 duction of Diamond Powder, . 176—178 



GEOLOGY. 



3. Use of Salt among the Natives in Namaqua 

 Land, South Africa, . . . 178 



METEOROLOGY. 



4. Some observations desirable to be made with 

 reference to the Glaciers of Norway. By 

 Professor James Forbes. 5. Theory of the 

 Pile and the Aurora Borealis. 6. w Piroroco " 

 or Bore that occurs in the Guama River at 

 Spring Tides. 7. Mirage of South Africa. 8. 

 Majestic Cloud seen from the Jungfrau, 179—182 



HYDROGRAPHY. 



9. A new method for taking Deep-sea Sound- 



in g s > 183 



ZOOLOGY. 



II. Report of Committee appointed at meet- 

 ing of the American Philosophical Society on 

 30th of February last, to examine and report 

 upon a collection of fine wools, presented by 

 the King of Saxony to Peter A. Browne, 

 Esq., 183-187 



BOTANY. 

 15. Microscopical Description of the Proto- 

 coccus nivalis from the Arctic Regions, by 

 M. Justice. 16. Dr Kane on Specimens of 

 Vegetable Matter found by him on the Ice 

 Plains of the Polar Seas, . . 187-188 



miscellaneous. 

 17. Important Scientific Invention, . 188 



