TILLAGE 



331 



Fio. 143. Work done by lister. (Kansas Station ) ' 



Fio. HI. S 



2. Harrows. The spike-tooth harrow is the form commonly 

 used and is very ell'ective in pulverizing and slightly compacting 

 freshly plowed land. In some places the "A " harrow, with square 

 teeth, is still extensively used, and is especially desiralile in stumpy 

 land. The lever harrow ( Kir. 1 1">) of two to four sections is very 

 commonly used, sometimes with a riding attachment. The levers 

 permit the slanting of the teeth so that any ruhhish will easily pass 

 out of the harrow. 



