122 



EGYPT I AX AGRICULTURE. 



for use on heavy land is from one hundred and eighty 

 to two hundred and twenty pounds, and its cost is about 

 400 P.T. 



Harrows are used for a variety of purposes. For pul- 

 verising the soil after ploughing, when it is in a friable 

 condition, and thus rendering the surface uniform. They 

 are also employed for covering the seed and freeing the 

 soil from weeds. We may point out a few operations in 

 connection with the system of Egyptian agriculture in 



Fro. 20. ZIO-ZAG HAHTJOW. 



which harrows may be most beneficially used. After the 

 sowing and ploughing in of wheat and barley by the native 

 plough we may harrow across the furrows to cover any 

 exposed seeds. After ploughing land intended for clover, 

 we may harrow across the direction in which it has been 

 ploughed to make the surface uniform and render the tilth 

 as fine as possible. The smaller the seed, the finer the tilth 

 required. In some harrows each tooth is secured by one 

 nut, while in others one nut secures four teeth. The. fewer 

 nuts the better as they are liable to get loose. 



