CONTENTS. 



PA6B 



IV. Anniversary Address, for 1848, to the Ethnological 

 Society of London, on the recent Progress of 

 Ethnology. By the President, James Cowles 

 Prichard, M.D., F.R.S., Corresponding Member 

 of the Institute of France, &c. Communicated by 

 the Ethnological Society. (Concluded from vol. 

 xlv., p. 346), . . . . . 63 



V. On the Vegetation of the Carboniferous Period, as 

 compared with that of the present day. By Dr 

 Hooker, Botanist to the Geological Survey of the 

 United Kingdom. (Concluded from vol. xlv., 

 p. 369), 73 



On the probable extent of the Flora of the Coal-Forma- 

 tion in Britain, ...... 76 



VI. On Dolomisation. By A. Von Morlot, . 78 



VII. On Emerald Nickel from Texas, Lancaster County, 



Pa. By Professor B. Silliman, Junior, . 80 



VIII. On the Erratic Formation of North America. Letter 

 from M. Desor to M. de Verneuil, dated Bos- 

 ton, November 7, 1847, .... 82 



IX. Report on the Timber Trees of Bengal. By Captain 



MuNRO, F.L.S., 84 



X. Decomposition of Substances by Steam, and Manu- 

 facture of Sulphate and Muriate of Potash, . 95 



XI. Remarks on the Succession of Organised Beings on 

 the Surface of the Earth. By Professor F. J. 



PiCTET, 102 



XII. The Migration of the Ancient Mexicans, and their 

 Analogy to the existing Indian Tribes of Northern 

 Mexico. By George Frederick Ruxton, Esq., 

 F.E.S. Communicated by the Ethnological So- 

 ciety, . ...... 114 



