[ 212 ] 



2 Men 2 Boys 



2 Maids 2 Labourers. 



Draining is the great improvement of 

 the country, by means of which the land 

 is much advanced in value, fo that many 

 acres which once yielded from .6 d. to <; s. 

 now are let at from 1 2 s. to 35 s. The 

 great work of main drains is done by act 

 of parliament, all the fuperfluous water is 

 carried by them into the fea at Hull ; but 

 as the level of thefe waters is lower than 

 that of the fea at fpring tides, a fluice at 

 a very great expence (about 3000 /.) is 

 erected, containing two large doors which 

 open in common by force of the frefh 

 water, and let it into the fea ; but when 

 the fpring tides rife, thofe doors are fhut 

 by the fuperior weight of water, and the 

 country prevented from being overflowed. 

 Plate HI. fig. 1. 2. are fkctches I took of a 

 model of this fluice, made ^ of an inch to 

 a foot. 



For the purpofe of railing the w r ater out 

 of the ditches of private perfons into the 

 drains, they creci mills that work by wind, 

 which raifc it various heights. I took 

 a draught of a fmall one, Plate IV. which 

 would be of incomparable ufe in many 

 countries, where thefe mills are quite un- 

 known, for carrying water away, jn places 



where 



