CONTENTS. ii» 



ART,,XXXi Observations on the Daily Periodical Growth of 

 Wheat and Barley. By M. Ernest Mayer, 

 Professor at Konigsberg, - - 154 



XXXI. Plan for ascertaining the Rates of Chronometers 

 by Signal. By R. Wauchopb, Esq. Capt. R.N. 

 Communicated by the Author, - 160 



XXXII. Notice of Goethe's Essay on the Metamorphoses 



of Plants, - - - - 162 



XXXIII. Observations on the Affinities of Vellosia, Barba- 



cenia, Glaux, Aucuba, Viviana, Deutzia, and of 

 a new Genus of the Order Rubiaceae. By Mr 

 David Don, Libr. Linnean Society, &c. 164 



XXXIV. Description of an Economical Apparatus for Heat- 



ing Apartments. By John Hart, Esq. 175 



XXXV. On the anomalous Structure in the Leaf of Rosa 



berberifolia. By Mr David Don, Libr. L. S. 175 

 XXXVI. Comparative View of the Secondary Rocks in the 

 Alps and the Carpathians. By A. Boue', M.D.^ 

 M.W.S. F.G.S. &c. - - - 176 



XXXVII. 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, 183 

 XXXVIII. Celestial Phenomena from Jan. 1. to Mar. 1. 1830, 

 calculated for the meridian of Edinburgh, Mean 

 Time. By Mr George Innes, Aberdeen, 187 



XXXIX. Proceedings of the Wernerian Nat. Hist. Society, 189 



XL. Scientific iNTELiiiGENCE. 

 meteorology. 

 1. Extreme Dryness of the Atmosphere of Greece, and rising 

 of the Land there. 2. Winter Climate of Rome very fa- 

 vourable for Consumptive Patients. 3. Climate of the Sou- 

 thern Hemisphere. 4. Dr Gerard's Travels in Thibet, 190-2 

 hydrography. 

 5. Ice-Islands off the Cape of Good Hope. 6. Colour of Rivers, 193 



mineralogy. 

 7- Impressions of Gems, &c. in Siliceous Sinter. 8. Notice of 

 magnificent Rock Crystals, and rose-coloured Fluor-spar. 

 9. Magnificent rose-red Fluor-spar. 10. Price of Selenium, 193-4 

 geology. 

 11. Observations made on Mount Caucasus by M. Kupfer. 12. 



