336 TOBACCO LEAF. 



Carolina, where the highest grade of yellow tobacco is 

 grown, and we find the following : 



Mason Co., Ky. Granville Co., N. C. 



Organic and volatile matter, 8.462 1.2050 



Alumina, 4.745 2.4965 



Oxide of iron, 6.240 0.6275 



Lime, .836 0.2330 



Magnesia, .798 0.0847 



Manganese, .146 0.0417 



Phosphoric acid, .231 0.0379 



Sulphuric acid, .084 0.0140 



Potash, .558 0.5045 



Soda, .160 0.2892 



Silica, 78.100 93.5035 



The White Burley soil has seven times as much 

 organic and volatile matter in it as the yellow tobacco 

 soil, twice as much alumina, ten times as much oxide of 

 iron, over three and a half times as much lime, nearly 

 ten times as much magnesia, three and a half times as 

 much manganese, nearly seven times as much phos- 

 phoric acid, six times as much sulphuric acid, and one- 

 tenth more of potash. The yellow tobacco soil has 

 nearly twice as much soda, and nearly 20 per cent more 

 sand. 



The topographical features of the White Burley 

 district in Kentucky are greatly diversified. High, 

 rolling ridges, round, domelike knobs, and sharp hills, 

 with here and there level stretches, are its characteristic 

 features. Many streams pass through the district, and 

 these have carved out deep, winding valleys that are 

 three or four hundred feet below the general surface of 

 the country. The great ridge, known as Dry Eidge, 

 which forms the main axis, or backbone, of the region, 

 runs approximately north and south. Upon this the 

 Cincinnati Southern railroad was built. From this 

 ridge, many transverse and subordinate spurs shoot 

 out, but they are so often dissevered by deep hollows, or 

 gorges, that the region presents for the most part a very 

 irregular series of rounded or flat elevations. The conn- 



