150 D R I N K I N G P O O L S. /, 



tended purpofc. They neverthelefs ftiewed 

 plainly enough the utility of channels for 

 catching hafty Ihowers falling owgrajfy Jlopes, 

 off which a confiderable quantity of water 

 will efcape, provided there be channels at 

 proper diftanccs to receive it. 



To reap the greateft benefit from an arti- 

 ficial run, and to make it with the greateft 

 eafe, — form the bafon at feme confiderable 

 diftancc from the head of a valley ; from 

 which down to the rcf.rvoir open a main 

 channel, by two furrows of a plow, turned 

 outward. From this main Hem plow lateral 

 branches along the fides of the flopes, by 

 fino-le furrows, turned dov/n-hill ; by v/hich 

 means the plowing will be rendered eafy, the 

 channels made free on the upper fides for the 

 admilTion of water, and high on the lower 

 fides for retaining it. If the bottom of the 

 valley be fteep, it would be better to rejie^ 

 the lateral branches than to fiioot them up- 

 v/ard, like the branches of a tree, toward the 

 head of the valley. 



The plow would not be Icfs expeditious in 

 fcouring than in making the channels : or 

 perhaps a more fledge-like implement would 



be 



