FIG. 46. MANNER OF FIXING NUBIAN TUBE-WELLS 



FIG. 47. THE DRIVE-POINT AND MONKEV GEAR, 



The price of the driving apparatus, the same set serving 

 for any number, is Rs. 45. The manner of planting the 

 drive-point first, is illustrated in Fig. 47, and the whole 

 arrangement for fixing the well in Fig. 46. 



233. Another device for irrigation called the Windlass 



