514 



GENERAL INDEX. 



Salisbury Crags, geological no- 

 tice of, .... 51 



Sandstone, red, rnineralogical 

 range of character, 22. Boun- 

 daries of, in the Lothians, 120. 

 Of the Peutlands, . . 84 



Sauroid fishes, uotes on, . . 478 



Shells, beds of recent, in raised 

 beaches, .... 473 



Slate-clays, chemical analysis of 

 different, . . . .113 



Soils in the Lothians, 112. Un- 

 transported soils, . .114 



St Leonard's Hill, geological no- 

 tice of, .... 51 



Tanagra nigricephala, . . 486 

 Tide-level observations recom- 

 mended, .... 499 

 Topographical distribution of the 

 rocks of the Lothians, . 119 



Transition rocks, propriety of the 

 term, 12 



Trap-rocks, nature and character 

 of, 40. Of West Lothian, 105 



notice of Sir James Hall's 



experiments upon, . .136 



Trap-tufa, nature and character 

 of, 42. Altered appearance 

 of, ..... 80 



Traprain Hill, geological notice 

 of, 87 



Tufas-trap, 42. Volcanic tufas, 43 



Valleys, origin of, . . . 82 



Warklaw Hill, geological notice 

 of, 84 



Wollastonite in veins, Castlehill, 

 Edinburgh, .... 67 



