CONTENTS. iii 



Art. XXIV. Letter from Professor Leslie to the Editor on 

 Mr Ritchie's Experiments on Heat, and New 

 Photometer, - - - - 171 



XXV. Description of several New or Rare Plants which 

 have flowered in the Royal Botanic Garden, 

 Edinburgh, during the last three months. 

 Communicated by Dr Graham, - 172 



XXVL Celestial Phenomena from January 1. to April 1. 

 1828, calculated for the Meridian of Edin- 

 burgh, Mean Time. By Mr George Innes, 

 Aberdeen, - - - - 177 



XXVIL Proceedings of the Wernerian Nat. Hist. Society, 179 



XXVHL Scientific Intelligence. 



METEOROLOGY. 



1. Great Fall of Rain at Bombay, - - - 182 



HYDROGRAPHY. 



2. Colour of the Red Sea. 3. Melted Snow employed as Drink. 



4. Notice regarding the Falls of Rewah, and a remark- 

 able Conical Hill at Myhur, - - - 182 



NATURAL PHILOSOPHY. 



5. Distances at which Sounds are heard. 6. Capillary Action 



7. Farther Observations made on the Solar Compass, 183-4 



CHEMISTRY. 



8. Metal of Alumina, - « - - - 185 



MINERALOGY. 



9. Largest known masses of Native Platina. 10. On the Os- 



tranite, a new Mineral Species; by Aug. Breithaupt 

 11. On the Rose-coloured Petrosilex of Sahlberg; by M. 

 *Berthier, ----- 185-6 



GEOLOGY. 



12. From what Countries have the Islands in the^ West Indies 

 derived their Plants? 13. Fossil Skeletons of Guada- 

 loupe. 14. Organic Remains of the Alluvium and Di- 

 luvium of Sussex. 15. Hansteens projected Journey to 

 Siberia. 16. Partsch's Journey through Transylvania. 

 17. Fossil Remains of Quadrupeds in the Tertiary Rocks 

 of Vienna. IS. Von Buch's Observations and Specula- 

 tions in regard to the Alps. 19- Boue's Memoir on Eu- 

 ropean Formations, and their probable Origin. 20. Dr 

 Boue on Secondary Rocks, - - - 187-190 



BOTANY. 



21. Signs of Increase, Maturity, and Decay in Trees; by M. 



