The trout's natural foods in European fresh waters and the tied flies that imitate them - here is the most complete scientifically precise and beautifully illustrated account yet published.It has been said that you could catch a salmon on its way up-river with your wristwatch and a bit of luck. But not the trout. It is feeding selectively. The master angler observes identifies ties the correct imitation and presents the wet or dry fly in its natural manner.