254 



Appendices to Thirtieth Annual Report 



4 men, for trespassing on banks of river with "gaff" in possession; 

 five cases, implicating 7 men, for being in possession of unseasonable 

 salmon ; three cases, implicating 6 men, for taking unseasonable salmon ; 

 one case, implicating 2 men, for having net in possession with intent to 

 take salmon. Fifteen of the above were convicted and fined — fines 

 ranging from 2s. 6d. to £4, besides expenses. Warrants were granted 

 to apprehend 3 of the men, and 1 man settled case out of Court. 



Obstructions to the Passage of Fish— 



1. Dam dykes disused, built, or in prospect : — No dam dykes disused ; none 



built or in prospect. 



2. Are the bye-laws observed in every case ? — No particular cause for 



complaint. 



3. Fish passes built or in prospect : — No new passes built. There is a 



prospect of two existing passes being reconstructed and improved during 

 the coming summer, viz., those at Muggiemoss and Stoneywood. 



4. No natural obstructions. 



Pollutions— 



1. The existing pollutions are: — Refuse from mills ; sewage from Bucksburm 



Bankhead, and Stoneywood, at each of which places there is a consider- 

 able and increasing population. 



2. Remedial measures : — Some of the mills have adopted remedial measures, 



e.g., the Grandhome Tweed Mills have put in pumping plant with the 

 object of preventing all polluting matter discharged from the mills from 

 finding its way into the river by diverting such polluting matter into the 

 city sewage system. 



The Salmon Disease— 



1. Disease made its appearance this year in the month of December. 

 The river was free of diseased fish about the middle of April, 1911. 



2. The number of diseased fish taken from the river and destroyed was as 



follows : — Kelts, 390 — 230 males and 160 females. 



The Spawning Season— 



1. Fish were first noticed spawning on 9th November. 



2. The greatest number spawned in December. 



3. Spawning ceased practically towards end of January. 



4. As regards numbers of breeding fish, and state of the water, the past 



spawning season is regarded as fully an average season. The weather 

 was open, but heavy flooding which has prevailed since the beginning 

 of November up to the present time has no doubt done a good deal of 

 damage to the spawning beds. 



Smolts— 



1. Smolts were noticed to be migrating seawards in middle of April. 



2. As a smolt year 1911 was rather below the average in numbers. 



REPORT FROM DON DISTRICT (ABERDEEN). 

 Return for Season 1910. 



Take of Fish— 



1 . (a) By fixed engines in the sea — Below average. 



(6) By sweep net in tidal or fresh waters — Slightly above average, 

 (c) By rod and line — About an average. 



3. Particulars as to the times grilse and sea trout appeared are as follow ■ 



Grilse — First grilse caught on 9th May ; chief run of grilse was in July, 

 but the whole run was rather under the average. Sea trout were got at 

 the opening of the season on 11th February, and were caught occasionally 

 during the whole course of the fishing season. As usual they were most 

 plentiful in July. 



4. The weight of the heaviest salmon taken during the season was 40 lbs. 

 The particulars of time and place of capture are : — 40 lbs., by fixed engine 



at Nether Don sea fishings, South station ; 38 lbs., by sweep ne<" at 

 Cruives of Don ; 38 lbs., by rod and line, also at Cruives of Don. 



