TILLAGE TOOLS: WHAT THEY ARE FOR 



195 



into practice, and is to be commended. If you find clods 

 on top, the wooden drag or roller will be the next imple- 

 ment to use. The wooden drag grinds the clods and 

 lumps ; and is also a good implement for leveling pur- 

 poses. The roller is primarily a crushing and compacting 





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A STEP IX SOIL PREPARATION 



The effect of the sprinjr-tooth harrow, after the roller, is shown in the picture. 

 This tool is splendid for loosening hard soils, for leveling and lor Stirling 



tool. While it is effective as a crusher, it drives the dry, 

 hard clods into the surface soil. 



You will find the roller most desirable during dry sea- 

 sons for compacting the soil so that capillarity may be 

 restored, and moisture from the great reservoir down in 

 the soil be drawn up to the seeds and roots. This, how- 

 ever, may prove harmful, for you may induce a too rapid 

 evaporation, and thus destroy your reserve supply. You 



