175 



sufficiently effectual to divert a brook 

 that generally affords water enough to 

 work an undershot-mill, or to float five 

 acres at once. It is nothhig more than a 

 strong common stake-hedge, having its 

 interstices filled up with clods and earth. 

 I do not, however, say that I have had 

 recourse to this species of dam by choice, 

 but from necessity ; for the land on one 

 side of the brook only is my property, 

 and I should therefore probably not be 

 allowed to cut into the opposite bank, in 

 order to eiect a permanent dam with 

 flood-hatches. Some of my readers may 

 be similarly circumstanced with myself, 

 and therefore I have thought my dam 

 not too despicable to appear in print. 



I have frequently been interrogated 



respecting the practicability of raising 



water by machinery, for irrigation, from 



z 2 streams 



