DRILLS FOR DRY-FARMING 319 
chains dragging behind the drill and covering the 
furrow quite completely. It is, however, very de- 
Fig. 85. Drill seeder with press wheel attachment. 
sirable that the soil should be pressed carefully around 
the seed so that germination.may begin with the 
__Fia-86. Sulky lister for corn. 
least difficulty whenever the temperature condi- 
tions are right. Most of the drills of the day are, 
