36 OBSERVATIONS ON A SALMON RIVER 



as plentiful or as nourishing as in the sea, 

 yet they may have the young of other fish, 

 worms, small eels and an abundance of in- 

 sect life for their daily fare. 



It is also said that nothing in the way of 

 partly digested food is ever found in a river 

 salmon, yet fish are known to disgorge dur- 

 ing their struggles after being hooked. 



Salmon fresh from the sea have been ex- 

 amined in great numbers to decide what 

 they feed on. The staple food seems to be 

 herring, though partly digested sand-eels, 

 whiting, and haddock have been also found. 



In the receiving pond at the fish hatchery 

 on the Spey in Scotland it is said that the 

 salmon become intermittent in their feeding 

 with the first frosts of autumn and consume 

 very little food in mid-winter, but feed well 

 during warmer weather. 



It was also observed that when the tem- 

 perature of the water rose above 70° the 

 salmon became listless and in thunder 

 weather they would not rise from the bottom 

 of the pond. 



