NORTH-CAROLINA GEOLOGICAL SURVEY. 55 



and by the extreme fineness of its inorganic matter ; and the 

 two compound elements are well' fitted to each other, and 

 admirably adapted to the growth of maize in this climate, 

 whereas in a northern climate it is very doubtful whether the 

 same results could be obtained. In Canada East there are 

 somewhat similar soils, but they are treated quite differently 

 in order to bring the soil under cultivation. There, the sur- 

 face is first burned, and the ash and debris remaining sup- 

 plies the nutriment for a succession of heavy crops. When 

 this first fertilizing matter, obtained by burning, is exhausted, 

 it is subjected to the same treatment again, and again put 

 under cultivation. The lands of the eastern counties would 

 not bear this mode of cultivation ; neither do they require it. 

 The}'' become productive by draining. 



30. The composition of the soil of Canada East, taken 

 from a tract which is there known by the name of Savanna 

 of St. Dominique, is composed, according to Mr. Hunt, of 



Fixed carbon, 29.57 



Ashes, 6.75 



Volatile matter, 63.68 



The ash or inorganic matter in 100 parts contained : 



Carb. Lime, 52.410 



Lime ""} as silicates, 1(U3 



Magnesia, ' 3.150 



Peroxide of iron, 4.680 



Alumina, 2.440 



Oxide of magnesia, 0.040 



Phosphate of lime, 2.019 



Sulphate of lime, 15.085 



Sulphate of potash, 0.605 



Sulphate of soda, 0.076 



Chloride of Sodium, 0.412 



Silica, 4.920 



Sand, 4.040 



100.308 



In the foregoing analysis we can readily perceive that the 

 material subjected to this process is an ash, with only faint 

 traces of soil, but in appearance the North-Carolina pocosin 



