FIG. 69. DEEP PLOWING MAKES BIG CORN YIELDS 



One of the first experimenters with dynamite for deep plowing was J. H. Caldwell, of 

 Spartanburg, S. C. He subsoiled a portion of his corn-field with dynamite and increased the 

 yield one-third over that of the portions not subsoiled. A committee of the Chamber of Com- 

 merce of Spartanburg inspected this corn and certified to the accuracy of the figures. 



