ii CONTENTS. 



Art. IX. On the History and Constitution of Benefit or Friend- . 

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

 tinued from p. 91. - - - 298 

 X, A Short Sketch of the Geology of Nithsdale, chiefly 

 in an Economical point of View, and contrasted 

 with that of the neighbouring Valleys. By James 

 Stuart Menteath, Esq. younger of Closeburn, 

 Member of the Wernerian Natural History Society. 

 1. General Account. 2. Basin of New Cumnock. 3. Ba- 

 sin of Sanquhar. 4. Basin of Closeburn. 5. Basin 

 of Dumfries. 6. Upper and Lower Basin of Annan- 

 dale. 7- Upper and Lower Basin of Eskdale. 8. 

 Annandale and Eskdale contrasted with Nithsdale. 

 9. Basin of the Dee contrasted with Nithsdale, 314 

 XI. A proposition for carrying on a Course of Experi- 

 ments, with a view to constructing, as a National 

 Instrument, a large Refracting Telescope, with a 

 fluid concave Lens, instead of the usual Lens of 

 Flint Glass. Addressed to his Royal Highness 

 the Lord High Admiral, and the Right Honour- 

 able and Honourable Members of the Board of 

 Longitude. By Peter Barlow, F. R. S. Mem. 

 Imp. Ac. Petrop. &c. &c. - - 323 

 XII. On the Principal Causes of the Difference of Tem- 

 perature on the Globe. By Baron Alexander 

 Von Humboldt, - - 329 

 XIII. Some Account of the Habits of a Specimen of Siren 

 lacertina, which has been kept alive at Canonmills, 

 near Edinburgh, for more than two years past. 

 By Patrick Neill, A.M. F.R.S.E. and Sec. W.S. 

 Communicated by the Author, - - 346 

 XIV. A Tour to the South of France and the Pyrenees in 

 the year 1825. By G. A. Walker Arnott, Esq. 

 F. R. S. E. F. L. S. M. W. S. &c. (Continued from 

 p. 139.), - - - - ^ 355 

 XV. Narrative of an attempt to reach the North Pole, in 

 Boats fitted for the purpose, and attached to His 

 Majesty's ship Hecla, in the year 1827, under the 

 command of Captain W. E. Parry, R. N. F. R. S. L. 



&c. 363 



XVI. Observations on the Dissecting and Preparing of the 



Bodies of Animals. By Professor Carus, - 378 



