10 



SCIENCE OF THRESHING. 



upon a prepared threshing floor and driving horses 

 or cattle over it, the hoof as it came down upon the 

 head splitting open the hull, or seed pod, and forcing 

 out the kernel. 



Later this result was accomplished by the flail, 

 which is nothing more or less than a mallet having a 

 long handle which enables the user to stand fairly 

 erect, the loosely hung long head of the mallet 

 striking a quick, sharp, rebounding blow, which 

 produces a jarring shock and causes the kernels to 

 fly out. 



With the present plan of threshing, the grain is 



