CHAP. XII. 



PLAN OF WATER MEADOW. 



879 



mation will be found in Mr. Boswell's interesting " Treatise on 

 Watering Meadows." l 



Fig. 377. w, c, c, w, a, a, is the meadow, highest at c c, whence it 

 has a slight gradual descent towards a a. 



The whole meadow is divided into ridges, each about nine yards 

 broad, which slope from the crown about thirteen inches towards the 

 lower sides, or about one inch to every foot in breadth. 



c tv 



Figs. 377, 378. Irrigation by Sloping Ridges (Ridge and Furrow). 



c c c is the main carriage, which, when the meadow is to be flooded, 

 is filled with water from the river B, R, through a sluice at S. c a, c a, 

 are carriages which communicate with the main carnage at the upper 

 side of the meadow, whence they are also filled with water, which, 

 running over the sides throughout their whole length, flows over the 

 grass, and then, falling into the drains on each side, d r, d r, is 

 conveyed into the drain r r, and from thence out of the meadow at n. 



All the carriages of water-meadows should be broad enough to 

 contain a sufficient quantity of water to flow over the whole surface of 



1 The reader may also consult Mr. Wright's Art of Floating Land ; and will find some 

 valuable hints on the subject in the Farmer's Calendar ; the Agricultural Survey of 

 Wiltshire ; Stephens's Practical Irrigator ; Thaer's Principles of Agriculture ; Annalen 

 des Ackerbaus, vol. ii. ; Driver's Hampshire ; and the Journal of the Royal Agricultural 

 Society of England. 



