398 



IRRIGATION FARMING. 



There are three systems of well-boring employed in 

 artesian work. For shallow wells the spring-pole is 

 the cheapest means as well as the slowest, and is often 

 resorted to by a farmer desiring to dig his own well at 

 small expense. A more pretentious outfit is such an one 



FIG. 93 — ARTESIAN WELL. 



as is shown in Fig. 94. In this machine the band- 

 wheel is turned by a belt from the engine. When 

 drilling elliptic gears revolve, which raise and lower 

 the drill as the hole is deepened. A hand-wheel hav- 

 ing a worm is turned to unwind a rope on the drum 

 that lowers the drill. The elliptic gears are engaged 



