OF FOG AND MIST 229 



than lightning, but these are of purely 

 local interest in cases like that alluded to 

 in the well-known Devonshire tag : 



In a Dartmoor fog 

 Stick to your grog, 

 Or yew'll fall in a bog. 



Most fishermen who have studied the Mr. 

 influence of fog on scientific lines draw 



distinction 



an interesting and important distinction between dry- 

 between the ways in which this condition a 

 of the atmosphere affects fishes that rise 

 after the perfect insect and those others 

 that feed on the larvae or other sub- 

 merged food, or, hi other words, as Mr. 

 Champneys puts it, between dry and wet 

 fly-fishing. It is by checking the natural 

 hatch, the appearance of which is usually 

 inter alia a matter of temperature, that 

 a mist on the water puts trout down. 

 Looking back on his experiences of dry- 

 fly fishing, Mr. Champneys is unable to 

 recall a solitary exception to failure in 

 foggy weather, and he has invariably 

 found the evening rise on the Test cease 

 abruptly as soon as an almost invisible 



