314, MAY. 



country presents. (6), in this dragram, may be A . 

 good meadow already ; in that case the water may, 

 run to waste in the ditch (ll), and so find its way 

 to the nver.. The main object in such a work as 

 this Calendar, is not to give a treatise on irrigation, 

 which would demand two such volumes, but only 

 to bring to the operator's recollection certain points 

 to which he ought to pay attention. 



Having watered one range of fields diagonally 

 across the space between the grand carrier and the 

 riverV bed, he may then return and work a second 

 range, and so on till he has acquired a power of 

 conducting the water to any field at pleasure ; and 

 by means of the ditches which intersect the space 

 and form the divisions of the fields, he can miss any 

 fields that are unprofitable on comparison with 

 others, leaving them for future operations, when 

 the quantity of water, and the effect of the irri- 

 gation, shall be better known. But while he thus has 

 it in his power to pick and choose the fields for 

 watering, still the whole is on one regular plan, 

 by which he may at any time be able to execute 

 all the parts, and render the whole, when finished, 

 if it be advisable to finish it, perfect and uniform. 



The divisions 13, 14, 15, 16, 17, form a diagonal 

 system. 



The others, 18, 19, and 20, another. 



21 and 22, another. 



23 and 24, another. 



25, 26, 27, another. 



28 and 29,7 



, ., ; others. 

 30apd 31,3 



32 and 



