288 EXPERIMENTS IN DRAINING. 



the other at the precise point contemplated, it will 

 find access from among the stones, etc., just below. 

 Having thus united several small drains, it be- 

 comes necessary to lay a larger tile in the drain 

 below, to carry away all the water furnished by the 

 several small drains above, now united in one ; this 

 is first enlarged by using a three-inch tile in place 

 of the two-inch used above ; then still further down, 

 and after other drains shall have been united, by a 

 four-inch pipe, and then perhaps a four-inch and 

 two-inch, side by side, and so on, according to the 

 number, extent and capacity of the smaller drains 

 that empty into it ; and, in one instance, I thus en- 

 larged one principal drain, till it consisted of three 

 four-inch tiles placed in one ditch ; and many times 

 during the year past, I have seen them all discharg- 

 ing water to the extent of their capacity, thus afford- 

 ing to those who have witnessed it, and who doubted 

 their successful operation, a satisfactary demonstra- 

 tion of their practical utility, which no amount of 

 merely theoretical illustration and argument could 

 have equaled ; and I doubt not that the outlet of 

 about 500 rods of my drain, terminating as it does 

 by the road-side, and coming from land apparently 

 as dry as any other, will do more to convince those 

 who shall notice it, of their great value, than the 



