CONTENTS. 



XXIII. Scientific Intelligence : — 



GEOLOGY AND MINERALOGY. 



1. On the Question in Natural History, Have Genera, 

 like Species, Centres of Disti-ibution ? 2. Quater- 

 nary or Diluvian Formation. 3. Temperature of the 

 Sea at Spitzbergen. 4. Analogy between the Fossil 

 Flora of the European Miocene and the living Flora 

 of America. 5. Burra-Burra Copper Mines in New 

 Holland. 6. On an Amorphous Boracite. 7. On 

 the Fossil Vegetation of Anthracite Coal. 8. Arti- 

 ficial Colours in Agate. 9. The Coal of the Kangra 

 Valley. 10. On the Silification of Plants and Ani- 

 mals. 11. Reptilian Remains in the Coal Forma- 

 tion. 12. On the Structure and Teratology of Crys- 

 tallised Bodies. 13. M. Ebelmen on Artificial Hya- 

 lite and Uydrophane. 14. Geology of the Coasts of 

 Australia. 15. Present and former e.xtent of the 

 Island of Heligoland. 16. On the Transporting 

 power of Currents. 17. On the Occurrence of Ores 

 of Mercury in the Coal Formation of Saarbriick, 



175-189 



BOTANY. 



18. On the Plant which furnished the precious wood called 

 Ebony, and on the country from which the Hebrews 

 exported it. 19. Preservation of the Forests in the 

 N.-W. P. of India. 20. The Tea Plantations in the 

 N.-W. Provinces of India, and the Culture of Ame- 

 rican Cotton in India, .... 190—194 



21. Equus Hemionus. 22. Notice of Dr Martin Barry's 

 Physiological Discoveries. 23. On the Fossil Bones 

 of the Ancient Birds of New Zealand. 24. On the 

 Geographical Distribution of Animal Species, 



194-197 



MISCELLANEOUS. 

 25. and 26. Projected Physico-Geographical Survey of 

 Kumaon and Gurhwal. 27. Adulteration in Medi- 

 cines, 197-199 



XXIV. New Publications received, . . . .199 



XXV. List of Patents granted for Scotland from 3d April to 



22d June 1848, 202 



