COB AT TILLAGE 



165 



Fig. 80. — A Disk-plowI 

 The disk which turns the soil shows only dimly beyond the frame. 

 ,t 



made of a double moldboard plow or "middle burster," and, in the 

 semi-arid Southwest, of a somewhat similar "lister." Doubtless 

 some of the labor-saving implements of the latter region, such as 

 "listers" and "combined Hsters and planters" (Fig. 81) could bp 

 effectively used on sandy soils in the South. Various forms of 



Fig. 81. — Combined Lister and Corn Planter. 



