306 . DRY-FARMING 
the minds of a great many students, whether the 
modern plow should not be replaced by some machine 
even more suitable for the proper turning and stirring 
of the soil. The moldboard plow is, everything con- 
sidered, the most satisfactory plow for dry-farm 
Fic. 74. Sulky -plow. 
purposes. A plow with a moldboard possessing a 
short abrupt curvature is generally held to be the 
most valuable for dry-farm purposes, since it pul- 
verizes the soil most thoroughly, and in dry-farming 
it is not so important to turn the soil over as to 
crumble and loosen it thoroughly. The various plow 
bottoms are shown in Figure 75. Naturally, since 
the areas of dry-farms are very large, the sulky or 
riding plow is the only kind to be used. The same 
may be said of all other dry-farm implements. As 
far as possible, they should be of the riding kind, 
since in the end it means economy from the resulting 
_saving of energy. (See Fig. 74.) 
