I-AKM IMPLEMENTS OF IRRIGATION. 175 



the work to the power of the animal or animals the cog or 

 the vertical wheel has 24 or 36 teeth. The sakieh is 

 made by the village carpenter with the wheels and axles 

 all of wood. It can be easily repaired. 



FH;. ")5 a. FAYOUM \\'ATI:K-\VHKKI..S. 



In the Fayonni where canals have a much greater slope, 

 and even a direct fall the current is used to turn a water- 

 wheel, to the rim of which pots are fixed, and a certain 

 amount of water lifted. Instead of pots fixed to it, the 

 wheel frequently has a stiff hollow rim divided into com- 

 partments like the form of sakieh known as the taboot. 

 For each 4*5 cabic metres available in a canal with a 

 fall of 1 metre the quantity raised should be 1 cubic metre 

 to a height of 4*5 in., but the friction and leakage cause so 

 much loss of power and water that in practice not more 

 than half this quantity of water would be raised. 



