This section is from the book "Fish Hatching, And Fish Catching", by R. Barnwell Roosevelt, Seth Green. Also available from Amazon: Fish Hatching, And Fish Catching.
As salmon. and trout are only taken for sport, they should never be caught with anything but the fly, which is the highest development of sport in fishing. Salmon are never fished for in any other way, but it will occasionally happen that a trout stream is so overgrown with trees and bushes, that the use of the fly is an impossibility. In such cases a person is perfectly justified in having resort to a worm. For this kind of work, especially in the small brooks which are so common in our country, and which flow down some mountain side through dense and unbroken woods, the best rod is a pole cut from the forest, as it can be taken by the smaller end and dragged along, when more delicate tackle would give trouble. The best line is a gut leader, which is tied to the end of the pole, and may be shortened by turning the latter in the hands and winding it up. For larger streams, where a reel can be used, a short rod with a small float are the proper implements. Pay out as much line, and keep the float as tar ahead as possible; have a leader of two or three feet in length, and no sinker. In streams connected with salt water and in ponds, minnows are better bait than worms. Minnows and worms can both be cast and played somewhat like the fly, and often with deadly effect.
Trolling spoons are fatal with the larger sea trout of Canada, and may either be drawn along after the boat while it is being rowed, or if small enough, they may be cast like the fly. It is rather a coarse method of fishing, and if a fish is once hooked he can never escape, except by breaking the line, as the hooks of the spoon will be imbedded in his jaws so that they are difficult of extraction after he is landed. Such devices are more appropriate to fishing for pickerel or mascallonge, than for so delicate and beautiful a fish as the trout. Artificial minnows, artificial grasshoppers, and the like, are not successful enough to justify their use.
 
Continue to: