IV CONTENTS. 



Botany and Zoology. — Notes on a Tour to Madeira, Teneriffe and Cape Verds, 

 from the Journal of the Voyage of Dr. J. R. T. Vogel to the Niger, 119. — On 

 the fundamental type and homologies of the Vertebrate Skeleton, by Prof. 

 Owen, 123. — On the Minhocao of the Goyanes, by M. Auguste de Saint 

 Hilaire, 130. — Ear of the Lininasiis stagnahs, 131. 



Astronomy. — The Planet Neptune, and its Relations to the Perturbations of Ura- 

 nus, 132. 



Miscellaneous Intelligence. — Facts in Physiological Chemistry, by J. Liebig, 135. 

 Inhalation of Ether: Gun-Cotton, 138. — Experiments on the use of Gun-Cot- 

 ton for blasting — its value compared with that of blasting Powder, by Thomas 

 B. Adams, 139. — Pyroxyline, 140. — Process for Photographs upon paper, by 

 M. Blanqdart-Evrard, 141. — Report on the Aurora Borealis, 142. — Hiero- 

 glyphical Mica Plates from the Mounds, by E. G. S^uier: Water-Power of 

 Europe : Auroral Belt of April 7, 1847, 145. — Volcanic Eruption at the Cape 

 Verds : Science and the Arts at Harvard : Association of American Geologists 

 and Naturalists, 146. 



_ 



Bibliography. — Elementary Geology, by Edward Hitchcock, D.D., LL.D., 146. 

 Dr. Mantell's Geology of the Isle of Wight : Medical Botany, or descrip- 

 tions of the more important plants used in Medicine, with their history, proper- 

 ties, and mode of administration, by R. Eglesfeld Griffith, M.D.: Princi- 

 ples of Geology — or, the Modern Changes of the Earth and its Inhabitants, con- 

 sidered as illustrative of Geology, by Charles Lyell, 147. — A Dictionary of 

 Modern Gardening, by Geo. Wm. Johnson : A Manual of Road Making, com- 

 prising the location, construction, and improvement of Roads and Railroads, by 

 Wm. Gillespie, A.M., C.E. : Transactions of the American Philosophical So- 

 ciety, Philadelphia, 148. 



list of Works, 148. 



Appendix. — Descriptions of Fossil Shells of the Collections of the Exploring Expe- 

 dition under Charles Wilkes, U. S. N., — obtained in Australia; by James 

 D. Dana, 151. 



NUMBER XI. 



Art. XIII. — On the Destruction and partial Reproduction of For- 

 ests in British North America ; by John William Dawson, 

 Esq. of Pictou, ---....- 



XIV. Review of the Organic Chemistry of M. Charles Gerhardt ; 

 by T. S. Hunt, — (concluded,) - 



XV. On the relative Age and Position of the so-called Nummulite 



Page. 



161 



171 



Limestone of Alabama ; by C. Lyell, F.R.S. and V.P.G.S., 186 



XVI. Notice of some recent Additions to our Knowledge of the 

 Magnetism of the United States and its Vicinity ; by Prof. 

 Elias Loomis, 



XVII. On the Trap Tuff, or Volcanic Grit of the Connecticut Val- 

 ley, with the bearings of its history upon the age of the Trap 

 Rock and Sandstone generally in that Valley ; by Rev. 

 Edward Hitchcock, 



XVIII. On Terrestrial Magnetism ; by Prof. William A. Norton, 



(concluded,) 



192 



199 



207 



XIX. Notice of Dr. MantelPs Isle of Wight, .... 230 



XX. Seventeenth Meeting of the British Association for the Ad- 



vancement of Science, 



238 



XXI. Theory of Transit Corrections ; by Enoch F. Burr, - 258 



