PRACTICE XXII (CONTINUED) 

 7. Reaction. 

 Follow the directions given in Practice VII. 



If acid, determine the acidity according to Practice IX. 



Titrations (1) cc. X aOH 



(2) cc. XaOH 



Av cc. XaOH 



Per cent CaCO 3 required 



CaCO 3 required for 2 million of soil 



If alkaline, determine the inorganic carbon (limestone present), as 

 indicated in Practice X. 



cc. CO 2 



Bar., Temp. 



Weight of C equivalent 



Weight of CaCO s equivalent 



Per cent of CaCO 3 present 



Av. per cent 



CaCO 3 in 2 million of soil 



COMPOSITION OF SOIL 



Pounds per Acre 



Air-dry Water-free 



basis basis 



Xitrogen 



Phosphorus 



Potassium .' 



Calcium 



Magnesium 



Limestone present 



Limestone required 



Suggest a practical method, of unlimited application, by which 

 the productive capacity of this soil may be profitably increased 

 and permanently maintained. 



47 



