Agriculture 333 



cessful in another State, cannot transplant these crops and 

 methods to these fundamentally different conditions without 

 great disappointment and loss. No, he must meet nature on 

 her own ground. He must first recognize the climatic condi- 

 tions and the nature of the soil (he may not call the latter by 

 the name of geology, but that is what it is) . 



The basis for the understanding of soils is a knowledge of 

 geology. The rocks of the earth are the source of the soils. 

 The processes by which rocks are broken are the processes by 

 which soils have been formed. Soil, in conjunction with water 

 and climate, is the basis of agriculture. Agriculture, by and 

 large, is the source of the world's food supply. Thus, upon 

 geology and geologic processes rests the future of civilization 

 and the existence of the human race. 



