CHAPTER XXXIII 



HARROWS, PULVERIZERS, AND ROLLERS 



HARROWS 



Utility of the Smoothing Harrow. Perhaps there is 

 no other tillage tool on the farm which is more effective than 

 the common spike-toothed smoothing harrow, when used 

 under the proper conditions and at the proper time. It 

 smoothes and pulverizes the surface, producing a fine tilth, 

 which not only prevents 

 a loss of moisture by 

 evaporation but also 

 destroys a. multitude of 

 weeds at the time when 

 they are the least able 

 to withstand cultivation. 



Selecting a Smooth- 

 ing Harrow. The stand- 

 Fig. 119. A modern U-bar smoothing 



ard harrOW Of the day IS harrow with protected tooth bars. A har- 

 row cart Is attached. 



the steel lever harrow 



for four horses, covering a width of 15 feet or more. A 

 harrow with a spread of from 10 to 15 feet is a size suitable 

 for a three-horse team. 



A lever harrow, which enables the teeth to be inclined 

 forward for penetration and backward for smoothing, costs 

 slightly more than a plain harrow or even an adjustable tooth 

 harrow; but the harrow at most is not an expensive implement 

 and the lever harrow is well worth the difference in cost. One 

 of the principal advantages of the lever harrow lies in the 

 convenience in cleaning. The adjustable tooth has a clamp 



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