— 14 — 

 Harro'wiDg. 



Q. What are the effects of harrowing ? 



A. The effects of harrowing are 1° to loosen and 

 level the earth ; 2^ to bury the seeds to a proper 

 depth. 



Q. What are the different kinds of harrows ? 



A. Harrows are made of various shapes ; the prin- 

 cipal kinds are the following : single harrows, double 

 harrows, set with wooden or iron teeth. 



Q. What is the difference betwen single and dou- 

 ble harrows ? 



A. Double harrows are at least twice as wide as 

 the single ones, so that more work can be done with 

 them in a given length of time. 



Q. Is the same team used for single and double 

 harrows ? 



A. One horse is sufficient for single harrows, the 



double ones require two. 



Q. Do harrows set with wooden or iron teeth 

 agree equally well with all kinds of soils ? 



A. The wooden teeth harrows may answer the 

 purpose in light or sandy soils which are not too 

 full of weeds ; but for strong soils, the iron teeth 

 harrows are indispensable because they work more 

 deeply in the soil and loosen it to a greater extent. 



Q. Is one single harrowing always sufficient? 



