APPENDIX. 37 



structed ; but as no two weirs are similar, the form of the ladder will 

 require to be varied according to circumstances. The entrance to 

 the ladder should always commence from some favourite pool at the 

 foot of the weir, where the fish resort in the greatest numbers, and 

 the ladder so curved as to bring the mouth of it over the pool, and 

 the flood waters so controlled by dam boards as not to inundate the 

 ladder and thus cast the fish back, 



May 21st, 1867. 



