74 Trout Culture. 



than the width of the stream, having two strong 

 uprights mortised into it about three feet from 

 each end, and carrying grooves to receive the slide 

 on which the zinc or iron screen is fastened. These 

 uprights are braced to the ends of the sole-plate 

 by " struts " or buttresses, with planking nailed 

 to them so as to form " wings," which extend 

 into the bank and prevent the water working 

 round instead of going through the perforations 

 of the screen, a thing which, in their absence, it 

 is sure to do. A firm bottom is selected, and 

 branches are made on each side of the bank 

 to bed the wings on. The bottom is levelled, 

 and the sole-plate is bedded carefully on it ; 

 and the stones and earth are rammed well in 

 round the wings. 



Large stones and bricks should be well 

 worked up to the sole-plate on both sides, and 

 for some distance, and should be well dressed 

 with puddled clay ; this in its turn being 

 covered with gravel and fine shingle, as we have 



