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Machines of thefe kinds, properly conftruded, 

 would at once improve lands, enhance their value^ 

 and reward the ingenuity of perfons (killed in 

 mechanics. 



There are many inftances of pafture lands being 

 raifed two-thirds in their annual value, by being 

 floated; viz. from one to three pounds per acre. 



Any gentleman, therefore, who has twenty acres 

 of land capable of fuch improvement, might well 

 afford to expend fifty pounds in eredling fuch ma- 

 chines as would effectually anfwer the purpofc ; 

 efpecially as land fo watered affords, in fpring, the 

 fined paflurage for ewes and lambs. 



Where the wind is to be the moving power, the 

 chief merit of the engine will confift in its being fo 

 conftruded as to be worked with the leafc atten- 

 dance, and turn about eafily of irfelf to receive the 

 wind from every direflion. There is a certain 

 point between the fmall felf- working wind ma- 

 chines, and the large ones which require conftant 

 attendance; which point, could it be exadly hit 

 upon, would determine what is the largefl: fize of 

 the vanesy and what the greateft weight of the ma- 

 chinery, that can be conftrufled fo as to be ufeful 

 without attendance. 



An 



