of the Fishery Board for Scotland. 



59 





Average, 





Average, 





Average, 





Average, 





Average, 







1894 to 1898. 



1899 to 1903. 



1904 to 1908. 



1909 to 1913. 



1914 to 1918. 



u is trice. 













































Tons. 



OQ 







Tons. 



% 



r t 



£1 



Tons. 



% 



u 





Tons. 



S 



C 





Tons. 



t 











6 









O 



& 





o 



O? 







O 



G? 







o 







oBerwick to 











































Cairnbulg Point 



1,206 



is 



l 



1 



839 



1 



2 



9 



887 



8 



2 



24 



1,015 



5 



3 



IS 



884 



1 



3 



17 



b Cairnbulg Point 









































17 



to Cape Wrath . 



900 



17 



3 



6 



737 



10 



3 



17 



608 



13 



1 



19 



664 



14 





3 



518 



8 



3 



c Cape Wrath to 











































Glasgow . . . 



403 



7 



1 



21 



274 



18 



1 



27 



209 



*3 



3 



6 



205 



2 





7 



157 



8 



3 



10 



d Glasgow to the 











































Border . . . 



260 



3 



2 



6 



183 



6 



1 



19 



160 



9 



3 



15 



171 



13 



1 



S 



91 



12 







Totals . . . 



2,771 



7 





6 



2,034 



17 



1 



16 



1,865 



15 



3 



S 



2,056 ' 15 



1 



1 



3 



1,651 



11 



2 



16 





Year 1919. 



Year 1920. 



District. 





















Tons. 





s 



i 



Tons. 



3 



s 



M 





• 



O 











c 





aBerwick to 



















Cairnbulg Point 



1,027 



13 



2 



m 



828 



14 





20 



b Cairnbulg Point 

















to Cape Wrath . 



520 



6 





8 



367 



2 



2 



22 



cCape Wrath to 















» 





Glasgow . . . 



148 



4 



1 



1 



160 



10 



3 





d Glasgow to the 



















Border . . . 



106 



16 







92 



10 







Totals . . . 



1,802 



19 



7 



2U 



1,448 



17 



2 



21 



A chart showing the curve of the averages will be found in the 

 report of the Inspector of Salmon Fisheries of Scotland (p. 136). It 

 appears that, since these returns were first obtained, the average 

 weight of salmon sent to market has dropped approximately by 

 1200 tons. 



The Inspector has, on more than one occasion, called attention to 

 the fall in the percentage of grilse to salmon, and it is clear that a 

 very considerable diminution in the numbers of these adolescent fish 

 of light weight may be masked in a return of the kind here given. 

 We are unable, unfortunately, to give any clear statistics of numbers. 

 It appears from the Inspector's report that grilse ha\'e now become 

 fewer than adult salmon in places such as the north coast of 

 Caithness and Sutherland where formerly they were in greatest 

 known abundance. 



In connection with the conservation of the spawning areas of the 

 salmon, questions of considerable importance have arisen through the 

 promotion of hydro-electric power schemes in Scotland. Two such 

 schemes, viz., the Lochaber water power and the Grampian electricity 

 supply schemes, have recently been under the consideration of the 

 Board from the point of view of their probable effect on the salmon 

 fisheries of the districts concerned. A scheme put forward for the 

 drainage of the haughlands of the River Spey was also considered 

 by the Board from a similar point of view. 



The dangers threatening the salmon fisheries from schemes of 

 this kind and from the growing evil of pollution are serious, and in 

 the Board's view point clearly to the need for some properly con- 

 stituted power of control. A revision of the Scottish Salmon Fishery 

 Acts, which would be required for this purpose, is urgently needed 



