544 SALMON LEGISLA TION IN SCO TLAND. 



The Tweed, the enactment. The best way to provide a free passage 

 for the salmon is undoubtedly to lower the dam at some 

 portion, which can generally be done without any serious 

 loss of water for mill purposes. The only alternative is to 

 construct a salmon ladder or pass, and if the dam is too 

 steep, it may be difficult to get a sufficiently easy gradient 

 without lowering the height. 



The proprietors above any cauld, &c., should have power 

 to apply to the Commissioners to remove or improve it on 

 guaranteeing the expense, if that cannot be laid on the 

 proprietor. 



The Special Commissioners of 1875 report that there is 

 no serious obstruction from Berwick-on-Tweed to the 

 spawning grounds, except Tweedmill cauld, which should 

 be bought, and either altogether removed or so improved 

 as to obviate objection to it. The regulations applicable to 

 Scotland generally under the bye-law (G) of the Com- 

 missioners with regard to hecks in mill-lades are preferable 

 to the regulations contained in section 59 of the Tweed 

 Act of 1857, and should be substituted for this section. 

 The whole bye-law might with advantage be applied to 

 the Tweed. This alteration would also provide against 

 the undue abstraction of water by mill-lades, upon which 

 there is no check in the Tweed Acts. 



POLLUTIONS. 



The remarks and suggestions made on pollutions and 

 poaching in a former part of this paper, with regard to 

 Scotland generally, apply with even more force to the 

 Tweed, which is unquestionably the most persistently and 

 extensively poached and polluted river in the kingdom. 

 It is therefore unnecessary to enter fully into the subject 



