46 Appendices to Twenty -fifth Annual Report 



2. The Leven. — (1) Town sewage from smaller towns in Vale of Leven. 

 (2) Town sewage from Dumbarton, which has recently been vastly 

 increased by the conversion of earth-closets into water-closets. (3) 

 Industrial pollution from works on the Leven banks. 

 1.. Remedial measures : — 



1. The Clyde. — The well-known purification works of Glasgow Cor- 

 poration now in progress. 



2. The Leven. — (1) An interdict action now pending at the instance of 

 the Loch Lomond Angling Improvement Association and the Colquhoun 

 Trustees against the Western District Committee of the County 

 Council of Dumbarton has stopped a threatened increase of town 

 sewage pollution at Alexandria by two new sewers. Formerly 

 existing sewers still pollute. (2) No remedial measures are being 

 taken by the town of Dumbarton to protect the river and parties 

 having rights therein. (3) The United Turkey Red Company are 

 endeavouring to stop, by additional filtration, certain noxious efflu- 

 ents complained of, but so far the Calico Printers' Association have 

 taken no steps to prevent certain noxious effluents entering the river 

 Both these bodies have met complainers in an amicable spirit. 



The Salmon Disease— 



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

 The river was free of diseased fish in January. 



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



follows : — 





Salmon. 



Males, 



Females. 



Kelts, .... 



3 



2 



1 



Clean, .... 









The Spawning Season— 



1. Fish were first noticed spawning on 10th October. 



2. The greatest number spawned in November. 



3. Spawning ceased in January. 



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



spawning season is regarded as an average one in numbers of fish, 

 flooded as to state of water, and unsatisfactory on the whole. 



Smolts— 



1. Smolts were noticed to be migrating seawards at end of April. 



2. As a smolt year 1906 was a good average year. 



Artificial Propagation of Salmon— 



1. The number of ova secured locally during the past season was 40,000 



sea trout. 



2. In securing ova the numbers of male and female fish captured were 



not observed. 



REPORT FROM AYR DISTRICT. 

 Take of Pish - 



1. As compared with the average results of previous years, the take of fish 

 generally throughout the district has been rather lower. The fish 

 appeared to be as numerous, if not more numerous, than in former 

 years, but a long spell of dry weather in August and September pre- 

 cluded fishing. It was only during the closing days that the river 

 was in order. 



