maintained as it is. Otters and herons in particular 

 appreciate this dainty, and either of them will travel 

 across country many miles to get to a well-stocked 

 trout stream. So strong is the instinct of the trout 

 to get into shallow streams to deposit their spawn, 

 that they will leap waterfalls several feet in height, 

 or wriggle up over gravel where there is not half 

 enough water to cover them, and where it is fre- 

 quently impossible for them to get back again, and 

 there they are often destroyed. 



