m 



k M^ill soon become powerful enough td 

 blow up the whole work; 



Wears or dams are generally recom- 

 mended upon an expensive plan, with 

 two, three, or more hatches ; but I have 

 feeen wears, in different parts of the king- 

 dom, of a more simple make, and yet 

 equally strong, and perfectly adequate to 

 the purpose of a dam, though constructed 

 at one-fifth part of the expense of the 

 others : it is therefore my duty to recom- 

 mend these in preference to the others, 

 especially in those instances where the 

 ■whole charge falls upon a mere renter of 

 the land. I have frequently seen a strong 

 and effectual frame of a wear composed 

 only of two rough pieces of timber, and 

 a few stakes, in the following manner :— 

 One of the pieces of timber, or beams, 

 was laid across the bottom of the stream, 

 bdow the water ; the other across tlie 



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