34 SALMONIA. 



the same thing happens; and a flood, or a 

 rough wind, I believe, assists the fly fisher, 

 not merely by obscuring the vision of the 

 fish, but, in a river much fished, by changing 

 the appearance of their haunts : large trouts 

 almost always occupy particular stations, un- 

 der, or close to, a large stone or tree; and, 

 probably, most of their recollected sensations 

 are connected with this dwelling. 



Phys. — I think I understand you, that the 

 memory of the danger and pain does not 

 last long, unless there is a permanent sensa- 

 tion with which it can remain associated, — 

 such as the station of the trout; and that 

 the recollection of the mere form of the ar- 

 tificial fly, without this association, is eva- 

 nescent. 



Orn. — You are diving into metaphysics; 

 yet I think, in fowling, I have observed that 

 the memory of birds is local. A woodcock, 

 that has been much shot at and scared in a 

 particular wood, runs to the side where he 

 has usually escaped, the moment he hears 

 the dogs ; but if driven into a new wood, he 



