MAY, 321 



inequalities, cut a variety of enclosures, and divide 

 the declivities into fields by good and sufficient 

 fences. 



15th, Wherever irrigation is applied, it is right, 

 when arable land is thus intended to be converted 

 into meadow, or on any other land the surface of 

 which is much broken by the works, to sow any 

 sort of grass-seeds that can be procured in the 

 greatest plenty, before the watering begins. It is 

 well known that the water will of itself bring 

 grasses, but it demands some time, and the be- 

 nefit of sowing them is always found to be consi- 

 derable. 



l()th, It is a common practice in Lombardy, to 

 have a sort of heavy harrow drawn along the bot- 

 tom of the main carriers, in order to disturb the 

 mud in autumnal, winter, and early spring irriga- 

 tions ; and it has been practised in England to 

 throw lime in, the great divisibility of whicli body 

 in water is well known : these are means of adding 

 to the manuring quality of the water, very easily 

 to be practised. 



17th, To attempt describing the minutiae of 

 erecting weirs, sluices, stops, and to note how 

 trendies or drains are dug, would be unnecessary. 

 In Mr. BoswelFs pamphlet on watered-meadows, a 

 work of great merit, these particulars ;ire detailed ; 

 and to him I refer for the necessary information. 



18th, Wherever roads intervene, the Italian 

 method is, to form a work of masonry to act as a 

 syphon :. the water is made to descend perpendi- 



