FARM IMPLEMENTS OF TREIGATION. 



1G9 



at the top. The open discharge end is fixed to a cross- 

 bar pivoted on two posts driven into the ground. A cross- 

 piece of wood forms a handle at the closed end. A man 

 seizing this handle plunges the wooden trough into the 

 water to fill it, then raising it up till the closed end is 

 above the level of the discharge end he pours the water in 

 the trough into the irrigating channel. A wooden trough 

 of this sort costs about 20 P.T., is fixed by merely driving 

 two small posts into the ground, and is worked by one 

 man. The end of the trough which is dipped into the 

 water is frequently made somewhat wider than the end 

 from which the water is discharged. When full of water 

 it is heavy to lift and is often partly counterpoised by 

 stones placed over the open end. 



Fin. 51. 



The quantity of water raised is represented by ABC the 

 immersed section of the trough which is generally about J 

 of its length. In this case the discharge would be 20 litres 



