SOILS. 



113 



decomposition of the subjacent rocks, and thus forming va- 

 rious kinds of Soils or Earths, and, finally, those pro- 



5. Slate-clay from Wardie, New- 



6. Unaltered slate 



i-clay from 



haven. 





Lochend. 





Silica, . 



60.00 



Silica, 



58.22 



Alumina, 



17. 60 



Alumina, 



17.50 



Oxide of Iron, 



15.21 



Protoxide of Iron, 



10.53 



Lime, . 



2.36 



Lime, . 



trace 



Loss by Heat, 



4.41 



Magnesia, 



4.62 







Soda, 

 Watei , 



2 02 



6.70 





99.58 









99.59 



Edin. New Phil. Jour. 



xxix. p. 195. 



Edin. New Phil. Jour. xxix. p. 387- 



7- Altered slate-clay from Loch- 



8. Altered slate-clay 



from Salis- 



?nd. 





bury Crags. 





Silica, . 



53.25 



Silica, 



66.100 



Alumina, 



1756 



Alumina, 



19.5 



Oxide of Iron, 



8.64 



Oxide of Iron, 



trace 



Lime, 



6.62 



Lime, . 



6.4 



Magnesia, 



2.70 



Soda, . 



4.45 



Soda, . 



7-85 



Water and Car- "j 

 bonic acid, j 





Water, 



2.23 



3.3 



98.85 

 Edin. New Phil. Jour. xxix. p. 387. 



To the above we now add the early 

 Edinburgh : — 



Analysis of the " Whin" (Green- 

 stone) of Salisbury Crags by Ro- 

 bert Kennedy, M.D., F.R.S., F.A.S. 

 Edin., Trans, of the Royal Soc. of 

 Edin, vol. v. p. 90. 



Silex, . . 96 



Argil, . 19 



Oxide of Iron, 17 



Lime, . 8 



Moistures and ether * 

 volcanic matters, / 

 Soda about, . 3.5 



Muriatic acid about, 1 



99.65 

 Edin. New Phil. Jour. xxix. p. 387. 

 analysis of the late Dr Kennedy of 



Analysis of the l ' Whin'' (Porphy- 

 ry) of the Calton Hill by the same, 

 vol. v. p. 92. 



98.5 



Sp. gr. 2.1 

 VOL VII. 



Silex, . 



50 



Argil, . 



18.50. 



Oxide of Iron, 



16.75. 



Carbonate of Lime, 



3 



Moisture and other | 

 volcanic matters, j 



5 



Soda about 



4 



Muriatic Acid about 



1 





98.25 



Sp. gr. 2.663, 





H 





