22 



Appendices to Twenty-fifth Annual Report 



Obstructions to the Passage of Pish— 



1. Dam dykes disused, built, or in prospect : — No dam dykes. 



2. With regard to the observation of bye-laws : — No cause for complaint. 



3. Fish passes built or in prospect : — No fish passes. 



4. Natural obstructions not yet dealt with are : — Practically there are 



no natural obstructions in the main river that would interfere with 

 the passage of salmon. 



Pollutions— 



1. The existing pollutions are : — Reference is made to last year's return. 

 1. Remedial measures : — Reference is made to last year's return. 



The Salmon Disease— 



1. No disease. Numbers of dead fish have been seen and taken from the 



river, but they showed no evidence of disease. 



2. The number of dead fish taken from the river was 372, as follows : — 





Males. 



Females. 



Kelts, . 



315 



57 



Clean, 







The Spawning Season— 



1. Fish were first noticed spawning on 18th October 1905. 



2. The greatest number spawned in upper reaches from 18th October to 



30th November 1905 ; in lower reaches from 1st December 1905 to 

 end of January 1906. 



3. Spawning ceased practically about 1st February 1906. 



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



spawning season is regarded as rather under the mark as regards 

 results. The number of breeding fish was plentiful, but the state of 

 the river was unfavourable, having been in heavy flood from the 1st of 

 November 1905 to the end of January 1906. 



Smolts— 



1. Smolts were noticed to be migrating seawards very early in March 1906. 



2. As a smolt year 1906 was nearly an average. The migration seawards 



began early, and the run continued a little longer than usual. 



Artificial Propagation of Salmon— 



1. The number of ova secured locally during the past season was 900,000, 



of which 31,500 became useless ; the remainder successfully hatched 

 out and were put into tributaries between Drum and Braemar from 1st 

 to 30th June 1906. 



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



respectively 49 and 51. 



REPORT FROM DON (ABERDEENSHIRE) DISTRICT. 

 Take of Fish— 



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

 * generally throughout the district has been a good deal below the 



average. 

 More particularly it has been 



(a) By fixed engines in the sea, below the average. 



(b) By sweep net in tidal or fresh waters, slightly below the average. 



(c) By rod and line, much below the average, 



