m CONTENTS. 



(Part Second.) 



"VIII. Account of the Structure of the Table Mountain, and other 

 Parts or the Peninsula of the Cape. D,awn up by Pro- 

 fessor Playfair, ,rom Observations made by Captain Basil 

 Hall, R. N. F. R. S. Edin. - Page 2o9 



IX. Comparison of the North Polar Dist nces of Thir- 

 ty-eight Principal Fixed Stars, on the 1st of Ja- 

 nuary 1800, as determined by Observations made 

 at Greenwich, Armagh, Palermo, Westbury, Dub- 

 lin, and Blackheath. B>i S. Groombridge, Esq. 

 Blackheath, F. R. S. Lond. Communicated by 

 Dr Brewster, - - - 279 



X. On the Optical Properties of Sulphate of Carbon, 

 Carbonate of Barytes, and Nitrate of Potash, with 

 Inferences respecting the Structure of Doubly Re- 

 fracting Crystals. By David Brewster, LL. D. 

 F. R. a Edin. & F. A. S. E. - 285 



XI. An Account of Observations made by Lord Webb 



Seymour and Professor Play air, upon some Geo- 

 logical Appearances in Glen Tilt, and the adja- 

 cent Country. Drawn up by Lord Webb Sey- 

 mour, - 303 



XII. On certain Appearances observed in the Dissection 



of the Eye of Fishes. By James L. Drummond, 

 M. D. of Belfast. Communicated by Dr Thomas 

 Brown, Professor of Moral Philosophy in the Uni- 

 versity of Edinburgh, - - 377 



XIII. Observations on the Theory of Language. By 

 Henry Dewar, M. D. Fellow of the Royal College 



of Physicians of Edinburgh, - - 387 



XIV. On the Diffusion of Heat at the Surface of the 



Earth. By John Murray, M. D. F. R. S. Edin. 411 



XV. On 



