198 LOCH-FISHING. 



a matter of no small difficulty. The same causes 

 which, regulate the angler in fixing the size of his 



river-flies should be his guide here also. The great 

 point at which to aim is to have a fly sufficiently 

 large to insure its being seen, but not large enough 

 to allow the trout to detect its artificiality. To 

 accomplish this the angler who visits a number of 

 lochs must be provided with all sizes of flies from 

 No. 10 up to No. 3. 



The colour of the water and the amount of wind 

 are two of the principal causes which should regu- 

 late the angler in selecting the size of fly. If the 

 water is dark-coloured, a size or two larger should 

 be used than when it is clear. If there is a strong 

 breeze of wind blowing, a size or two larger may 

 be used than when there is little wind ; and when 

 there is no wind at all, we have found an approach 

 to river sizes, say Nos. 9 and 10, most effective 

 always remembering to increase or diminish the 

 size, according as the state of water and wind pre- 

 vents the fly being easily seen or the reverse. 



We once had a signal proof of what difference 

 the wind will make, when fishing a loch from a 



