308 FORM NEW WATERED-MEADS. [MAY. 



and raised, if water be plentiful, three feet higher 

 on the crown than in the furrow 7 , in this form. 



and of course these ridges must be laid out by the 

 spirit level, so that the delivering trenches on their 

 crowns may be able to take water from the larger 

 carriers which lead along one head-land ; and that 

 the furrow-drains may convey the water away to 

 the receiving ditches provided for that purpose. 

 Those trenches are to be so exactly cut, that they 

 will overflow through the whole length equally at 

 the same time, for which purpose they lessen in 

 breadth as they advance. But upon dry slopes, no- 

 thing more is requisite than to cut trenches of de- 

 livery, which operate by alternate watering both 

 as deliverers and as drains. This is a point little 

 understood in watering through several districts I 

 have seen, and as it is a very important one, and 

 a branch of that diagonal system I have already ex- 

 plained with relation to the position of the fields, 

 it merits a short explanation. 



In the annexed Plate, the. slope of the land from 

 A to B, is supposed regular, which, of course, 

 rarely happens in nature, nor is it essential, as any 

 man who has common sense will see that inequali- 

 ties of surface, though they may break the uni- 

 formity of his li; -ing a necessity of going 



round 



