CONTENTS. 



Art. VI. On the Recent Progress of Ethnology, being 

 the Annual Discourse for 1852. Read before 

 the Ethnological Society, at the Annual Meet- 

 ing, on 14th May 1852. By Richard Cull, 

 Esq., Honorary Secretary. (Communicated 

 by the Ethnological Society), . . 67 



VII. Chemical Report to the Lords of the Committee 

 of Privy Council for Trade, on the Cause of 

 Fire in the Ship Amazon. By Professor 

 Graham, ...... 79 



VIII. On the Foliation and Cleavage of Rocks of the 

 North of Scotland. By Daniel Sharpe, Esq., 

 F.R.S., &c, 84 



IX. On the Structure of the Iguanodon, and on the 

 Fauna and Flora of the Wealden Formation. 

 By G. A. Mantell, Esq., LL.D., F.R.S., 87 



X. On the Clouds and Equatorial Cloud Rings of 

 the Earth. By Lieut. Maury, of the Ameri- 

 can National Observatory, . . 92 



XL On the Blackheath Pebble-Bed, and on Certain 

 Phenomena in the Geology of the Neighbour- 

 hood of London. By Sir Charles Lyell, 94 



XII. On the Great Principles either suggested or 

 worked out by the late celebrated Dr William 

 Prout, F.R.S., &c. By Dr Daubeny, Profes- 

 sor of Botany, Oxford. (Communicated by the 

 Author), 98 



XIII. The Cambrian and Silurian Discussion, . 102 



1. Professor Sedgwick's Answer to Sir R. I. Mur- 

 chison's Letter, inserted in the Literary Ga- 

 zette, and at page 355 of the Fifty-second 

 Volume of the Edinburgh Philosophical Jour- 

 nal, 10! 



2. Sir R. I. Murchison's Comments on Professor 

 Sedgwick's Letter (No. 1), . . . HO 



3. Professor Sedgwick's Reply to the preceding 

 Fitter of Sir K. I. Murchison, . . \\ t 



