eONTENTS. «tt 



Abt. XI. On the Structure and Habits of the Limnoria tere-t 

 brans, a minute Crustaceous Animal, destructive 

 to Marine Wooden Erections, as Piers, &c. By 

 John Coldstream, M. D. M. W. S. Commu- 

 nicated by the Author, - - 316 

 History, _ . - - ib. 

 I. External Characters, - - 318 

 II. Anatomical Details, - - - 319 



III. Performance of PVinctions and Habits, 326 



IV. History of the Ravages committed by the Lim- 



noria, ... - 328 



v. On the purposes which the Limnoria is fitted to 



serve in the economy of Nature, - 332 



XII. Inquiries respecting the Weight of Man, at diffe- 

 rent Ages. By M. Quetelet, - 334 



XIII. Cuvier -as a Naturalist. By C. L. Laurillard, 



Conservator of the Cabinet of Anatomy in the 

 Museum of Natural History of Paris, - 340 



XIV. Some Remarks on the Plant which yields the Casca- 



rilla Bark. By David Don, Esq. Libr. L. S. &c. 

 Communicated by the Author, - - 367 



XV. Remarks on Mr Nicol's Observations on the Struc- 

 ture of Recent and Fossil Coniferae. By Wil- 

 liam Macgillivray, a. M. F. R. S. E. &c. 369 



XVI. On a Method of so far increasing the divergency of 

 the two Rays in Calcareous Spar, that only One 

 Image may be seen at a time, - - 372 



XVII. On Petroleum or Mineral Oil. By Dr Reichen- 



bach, ----- 376 



XVIII. On the Berlin Cast-Iron Ornaments, - 384 



XIX. Additional Notices relative to the Fresh- water Lime- 

 stones in the vicinity of Edinburgh, belonging to 

 the Carboniferous group of Rocks. By Dr Hib- 

 BERT, - - - - 386 



XX. Meteorological Table, extracted from the Register 

 kept at Kinfauns Castle, North Britain. Lat. 56° 

 53' 30". Above the level of the Sea 160 feet. By 

 the Right Hon. Lord Gray, - ■ ^ 389 



