108 



THE OLIVER PLOW BOOK 



Illustration K 



Illustration K is a stubble bottom designed for use in 

 waxy soils and the lighter prairie soils where scouring 

 troubles prevail. This bottom is particularly adapted 

 to work in those soils that have a tendency to stick to 

 the mouldboard, but are rather loose in their composi- 

 tion. For this reason the share and mouldboard are 

 shaped to cause as little breaking of the soil as possible 

 until it leaves the mouldboard. The furrow is turned 



A type of soil in which the above illustrated mouldboard is in common 

 use. A glance at this picture is sufficient to show that the plowmaker's 

 problem is a difficult one. 



slightly more than half over. On account of these 

 features this bottom is not adapted to plowing sod. The 

 unusually sharp point and narrow angle formed by the 

 landside and share give this bottom great penetration, 



