ii CONTENTS. 



Art. X. Report made to the Royal Academy of Sciences of 

 Paris, upon a Memoir by M. Constant Prevost, en- 

 titled. An Examination of the Geological Question, 

 whether the Continents which we inhabit have 

 been repeatedly submersed by the Sea. By Mess. 

 CuviER and Cordier, - - - 66 



XI. On the History and Constitution of Benefit or Friend- 

 ly Societies. By Mr W. Eraser, Edinburgh. Con- 

 tinued from p. 296. of former Volume, - 69 

 XII. Sketch of the Physical Geography of the Malvern 

 Hills. By William Ainsworth, Esq. Member of 

 the Royal College of Surgeons, Edinburgh, &c. 

 Communicated by the Author, - - 9I 



XIV. 1. Proposed Improvement in the Theory of Sound, 

 and in the mode of Measuring its Velocity. 2. On 

 the Theory of the Variation of the Barometer. By 

 H. Meikle, Esq. Communicated by the Author, 100 

 XV. Excerpt from a Memoir on British Harbours, drawn 

 up in the year 1824. By Robert Stevenson, Esq. 

 F. R. S. E. & M. W. S. &c. Civil Engineer. With 

 a Plan. Communicated by the Author, - 110 



XVI. Observations on the Coal-field, and accompanying 

 Strata, in the vicinity of Dalkeith, Mid-Lothian. 

 By Robert Bald, Esq. F. R. S. E. M. W. S. &c. 

 Mining-Engineer. Communicated by the Author, 115 



XVII. On the Covering of Birds, considered chiefly with re- 



ference to the Description and Distinction of Spe- 

 cies, Genera and Orders. By Mr W. Macgillivray, 

 M.W.S. &c. Continued from former Vol. p. 263. 123 



XVIII. A Tour to the South of France and the Pyrenees, in 



1825. By G. A. Walker Arnott, Esq. F.R.S.E. 

 F.L.S. M.W.S. Continued from former Vol. p. 356. 130 



XIX. Account of Harris, one of the Districts of the Outer 



Hebrides. Communicated by the Author, 1 40 



XX. On the Discovery of Native Iron in Canaan, Connec- 

 ticut, North America, - - - 154 



XXI. General Observations on Natural History, made du- 

 ring a Journey among the Blue Mountains in New 

 South Wales, By M. R. P. Lesson, - 156 



XXIII. Analyses made at Colombo of Ceylonese Varieties of 

 Ironstone and Limestone. ByGEORGE Middleton, 

 Esq. Apothecary to the Forces. Communicated by 

 Sir James M'Grigor, - - ,- I67 



