208 EGYPTIAN AGRICULTURE. 



There is an objection to having land at different levels, 

 as the higher land causes infiltration to the low but this 



M E T R E S - > --SO METRES 



* 3,5 METRE S -V=> ' 



can be obviated by a drain separating the two, provided 

 always that the drain is kept in good order. 



The scoop when full holds one fifth of a metre cube. 

 The amount of daily work which can be done by a pair 

 of bullocks is approximately as follows : - 



Lead. Cubic metres. Number of Scoops. 



25 m. 30 150 



50 m. 17 85 



100 m. 10 50 



200 m. 5 25 



Allowing 25 metres on each journey above the length 

 of lead for filling and emptying the scoops, the bullocks 

 must travel twelve kilometres per da}'. One has only to 

 watch the frequent long stops and very slow speed of 

 bullocks at kassabia work to be satisfied that the foregoing 

 estimate of work is high. 



A not uncommon instance of levelling would be taking 

 down a gradual slope of 30 centimetres to a distance of 

 200 metres. That involves the transport of 415 cubic 

 metres per feddan to an average distance of 140 metres 

 and yet such land would appear level to the eye. Bullocks 



