56 FISH FAEMING : 



ning of them is the same, and the method of working does not 

 differ in any caise. 



The controlling sluice illustrated is built from a model by 

 Herr S. Jaffe, amd is in us ait the Earl of Denbigh's fishery,, 

 at Ysceifio'g, North Wales. 



One of the most simple screens to place at the inlet and cait- 

 let of a pond, and, in conjunction with the controlling sluice 

 just described, one of the most effective, is what I have styled 

 a horizontal box screen, and it forms the subject of the next 

 illustration. Fig. 15 is ai sectional plan of the apparatus 



# /////////////////////////////////py. 'j^/// 



Fig. 15. Sectional Plan of Horizontal Screen. 

 Fig. 16. Section of Horizontal Screen. 



through a line A B of Fig. 16, and Fig. 16 is a section through 

 a line c D of Fig. 15. I think the present photograph and 

 drawings, together with the photographs that accompany Fig. 

 10, nrake the use of this screen quite clear. It is formed after 

 the following very simple manner : Two sides and the bottom 

 only of a long box, made from stout boards. Midway is placed 

 a partition E, which extends from side to side and half the 

 depth of the box from the top edge. At the inlet end another 

 similar partition occurs, F, only in this case it extends from 

 side to side, half way up from the bottom. Throughout half 

 the length of the box a perforated zinc screen, G, extends, and 

 this is fixed to the two partitions E and F, and further sup- 

 ported by strips of wood fastened lengthwise on the sides of 



