12 TALKS ABOUT THE SOIL. 



worthless ; whether it will give us good crops, or only 

 poor and unprofitable returns for our labor. To make 

 these surface indications of value, we must first study 

 the past history of the world, and endeavor to find 

 out how the various soils that cover the rocky frame 

 of our planet were made. The soil is the child of the 

 rocks. The rocks appear through the surface of the 

 ground, among the hills and mountains. It is, there- 

 fore, to the hills we must look for information concern- 

 ing this varied and beautiful garment of the world, 

 we call the soil. 



