CAMPBELL'S SOIL CULTURE MANUAL 91 



CHAPTER XI. 



PHYSICAL CONDITION OF THE SOIL. 



By the physical condition of the soil we refer to the 

 proper preparation and that final condition of the soil that 

 so completely regulates or governs its producing powers. 



There is no subject less understood toda}^ and there is 

 no one branch of agricultural science so vital to the suc- 

 cess of the farmer as a thorough knowledge of soil physics. 



The man who delves down into the very heart of this 

 subject and follows every line and branch until he ferrets 

 out all the dark secrets of controlling and utilizing na- 

 ture's great resources now lying dormant in our great 

 prairies, will do more for suffering humanity than any 

 half dozen men have ever yet done. 



It is our candid opinion that when this is accomplished, 

 grain will be produced so much cheaper because of the 

 greatly increased yield per acre, that bread will be pro- 

 vided at much less than the present cost. 



Millions are being spent by the United States govern- 

 ment in building enormous reservoirs and miles of expen- 

 sive ditches, and millions more in scanning other coun- 

 tries far and wide for improved plants and seeds, but all 

 this combined cannot provide as many prosperous farmers 

 or cheapen the cost of production like the thorough knowl- 

 edge of soil physics and soil culture. 



It is appalling to think that we have so many men 

 who know all about the soil and its tillage, or think they 



