GROUND LIMESTONE 



quirement for the fineness wanted in a high- 

 priced article that must be used sparingly. 

 The aim should be to store in the soil for 

 a term of years, and the coarse portion is 

 preferable to the fine for this purpose be- 

 cause it will not leach out. The heavy 

 application will furnish enough fine stuff to 

 take care of present acidity. If nearly all 

 the product of such a pulverizer will pass 

 through a lo-mesh screen, and the amount 

 applied is double that of very fine lime- 

 stone, it should give immediate results and 

 continue effective nearly twice as long as 

 the half amount of finer material. There 

 could hardly be a practical solution of the 

 liming problem for many regions without 

 the development of such devices for pre- 

 paring limestone for distribution, and it is 

 a matter of congratulation that some manu- 

 facturers have awakened to the market 

 possibilities our country affords. 



37 



