Improved System of Irrigation, 



167 



In watering with 'a small stream which happens to be in- 

 sufficient for the whole meadow, the water must be confined to 

 ground determined on by stops in the two perpendicular gutters 

 which run on the two sides of it, thus : — 



AB 



is 



the 



6. 



Fig. 5 is a section of the net-work of gutters ^ 

 carriage-gutter ; a is a taper watering-gutter, to the extent of 

 which the water is supposed to be determined to be confined ; 

 Z>, c, e, are the feeding gutters (perpendicular to the levels) ; 

 the cross-gutters are the " level" ones ; h and e serve as the 

 two side gutters of the proposed section to be watered. The 

 water is confined to the ground between them by stops at the 

 crossings, arranged thus : — 

 & is a crossing on the ^ 

 feeder fig. 5) ; and e is 

 a crossing on the feeder ^ 

 (e, fig. 5); 1, 2, 3, 4, are — 

 stops, the purpose of which — ^ 

 is obvious enough. The 

 arrows show the direction 

 the water is made to run. The stops are pieces of the turf taken 

 out of the gutters, which, being cut with a " t/z'e," of course fit 

 the gutters with exactness ; by this means any stoppings that 

 may be required are done instantly, without any trouble or loss 

 of time. 



The gutters are not to be cut in the same places two years 

 following, but on one side as near as can be conveniently done, 

 say about a foot and a half from the former ones ; and the turf 



