170 



THRESHING MACHINES. 



weeks, or, perhaps, days. Yet it is doubtful, 

 seeing they are expensive, and subject to mis- 

 management and injury, whether the farmer 

 gains much by them, beyond the mere conve- 

 nience of a speedy preparation of his corn for 

 sale. 



Dressing machines, for cleansing the grain 

 from chaff, &LC. seem liable to fewer objections, 



