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raneous drains, into refervoirs; whence it is again raifed 

 into the lake or river, by means of pumps, and other 

 machines, proper for that purpofe. They always give a 

 considerable depth to their waters, at leaft five or fix feet, 

 to prevent the rifing of fcum, and the floating of weeds 

 upon the furface; and they are always provided with 

 fwans, and fuch other birds as feed on weeds, to keep them 

 under. 



In overflowing their grounds, and alfo in draining 

 them, they take all poffible care not to kill many of 

 their old trees, either by over moiftening their roots, or 

 draining them too much ; faying, that the lofs of a fine 

 old plant is irreparable; that it impairs the beauty of the 

 adjacent plantations; and often likewife deftroys the efTecl: 

 of the fcenery, from many diftant points of view: and 

 in fhaping their grounds, they are, for the fame reafon, 

 equally cautious with regard to the old plantations; care- 

 fully obferving never to bury the ftems, nor to expofe the 

 roots of any trees which they mean to preferve. 



In 



