STORING LIME IN THE SOIL 



investment in the former case is larger than 

 in the latter, it continues to be good business 

 up to a certain point, and the room for some 

 uncertainty is wide enough to provide for 

 much difference in judgment. 



Quality of the Stone. Another factor of 

 uncertainty is the hardness of the stone. A 

 limestone may have such flinty character- 

 istics that a piece barely able to pass 

 through a lo-mesh screen will not disinte- 

 grate in the soil for years, and there are 

 other types of limestone that go into pieces 

 rapidly. The variation in quality of stone 

 accounts for no little difference in opinion 

 that is based upon limited observation. 



Using One's Judgment. It is evident 

 that no hard and fast rule respecting fine- 

 ness may be laid down, and yet a rather 

 definite basis for judgment is needed. 

 There is much good experience to justify 

 the requirement that when all ground lime 

 is high-priced in any section for any reason, 

 and the amount applied per acre is thereby 

 restricted, the material should be able to 

 pass through a screen having 60 wires to the 

 linear inch, and that the greater part should 

 be much finer. Usually some part of such 

 stone will pass through a aoo-mesh screen. 



