GUARD AGAINST A SLACK-LINE Cast. 155 
ELY-FISHING FOR Trout. 
twelve feet of line; then increase the length as he learns to 
cast it, so that it will he straight on the water, and a trout, 
in attempting to taste, will be sure to hook himself, because 
there is no slack line. This is important; for if the trout 
strikes at a fly on a slack line, he at once becomes disgusted 
at so lame an effort to deceive, and the slack-line fisher will 
never receive a second visit from him. But if you cast 
a straight line, and the trout misses the fly, he will come 
