Tillage to Destroy Weeds, 



227 



FIG. 64. A type of good cultivator. 



Cultivators with rigid teeth like those of Fig. 66 do bet- 

 ter work as a rule than those of the spring tooth type rep 

 resented in Fig. 64, for the reason that the ground is 

 stirred more completely and to a more uniform depth. On 

 naturally mellow soils the spring tooth is good and where 

 the land is very stony it is safer against breaking. 



. -Cultivator with too wide teeth for general use. 



