PRACTICAL FLY FISHER. 33 



REMARKS. 



ON perusing the former part of this Volume, it will be 

 observed that the intention of the Author was not to 

 write a perfect treatise on Angling ; but a practical detail 

 of the Flies, and the best mode of dressing them, as 

 they appeared on the River Yore, as a guide to the 

 advanced Angler, should he make a piscatorial tour into 

 the North of Yorkshire : and it was his intention to 

 have described the properties and peculiarities of two or 

 three of our northern rivers, but more particularly of 

 the A ire, Wharfe, and Rye. His object, likewise, was 

 to call the attention of Anglers to the habits of, and 

 modes of fishing for, Grayling rather than Trout ; 

 although what applies to the former is applicable to a 

 certain extent to the latter. 



They are both found existing in the same stream ; 

 yet they frequently occupy very different positions in it. 



The Grayling differs from the Trout in this respect, 

 it does not ascend the stream so high, and descends lower 

 than the Trout. Thus very few Grayling are found in 

 cold mountain streams ; but when the Trout ceases to 

 exist, the Grayling continues to be found. 



This circumstance seems to depend upon several 

 properties ; and first, on the temperature both of the 

 external air and the water ; thus they require a warmer 

 temperature than the Trout. If Grayling are placed in 

 the same pool with Trout, fed by a cold spring, the for- 

 mer soon die ; whilst the latter will thrive amazingly. 



