CONTENTS. 



PAGE 



conformable to the Law of Gi-avity — Actual Di- 

 mensions of Comets — Great Interest at present 

 attached to Cometary Astronomy, and its Reasons 

 — Remarks on Cometary Orbits in general, . 248 



VI. On Oceanic Infusoria, Living and Fossil. (Concluded 



from p. 160), 261 



VII. Notice of Land- Shells found beneath the surface of 

 Sand-hillofiks on the Coasts of Cornwall. By 

 Richard Edmonds Junior, Esq., . . . 263 



VIII. On the Geographical Distribution of the Languages 

 of Abessinia and the Neighbouring Countries. By 

 Charles T. Beke, Esq., Ph.D., F.S.A., &c. 

 (With a Map.) Communicated by the Ethnolo- 

 gical Society, ...... 265 



IX. Instructions for Collecting and Preserving Invei'te- 

 brate Animals. By Richard Owen, F.R.S., Hun- 

 terian Professor to the Royal College of Sui-geons 

 of England, 280 



X. Remarks upon the General Principles of Philological 

 Classification and the Value of Groupes, with par- 

 ticular reference to the Languages of the Indo- 

 European Class. By R. G. Latham, M.D. Com- 

 municated by the Ethnological Society, . . 293 



XI. On the Fall of Rivers, especially that of the Jordan, 

 in Palestine; the Thames, Tweed, Clyde, and Dee, 

 in Britain ; and the Shannon, in Ireland, . 303 



XII. An Analysis of Plate-Glass. By Messrs J. E. Mayer 



and J. S. Brazier, ..... 316 



XIII. On Carbonate of Lime as an ingredient of Sea-Water. 

 By John Davy, M.D., F.R.S., Lond. and Edin., 

 Inspector-General of Army Hospitals, &c., . 320 



