686 MR GEORGE MUIRHEAD ON TEMPERATURE ON TAKING OF SALMON. 



Table. 



Average Weekly 



Variation in 



Temperature in 



Degrees Fahrenheit. 



Average Number 



of Salmon taken 



daily by each 



'Kod.' 



o 



3 



2-51 



4 



1-80 



5 



1-36 



6 



1-40 



7 



1-35 



8 



1-07 



9 



0-78 



11 



070 



12 



0-40 



Conclusions. 



1. That salmon are influenced by variations in the temperature of the water in the 

 taking of the artificial fly in the Spey at Gordon Castle during the rod-fishing season 

 there. 



2. That under ordinary conditions of river and weather they take the fly best there 

 during a period when there is least variation in the temperature of the water of the 

 river from day to day. 



3. That under ordinary conditions of river and weather they do not take the fly well 

 during a period when there is much variation in the temperature of the water of the 

 river from day to day. 



