Cul de Canard (Duck's Rump), Farefelue (The Crazy One), Plantureuse (Buxom Gal), Peute (The Ugly One)--the names are deliciously French but one would make a terrible mistake to think that only French-born trout like these fishing flies. "Design," said Datus Proper, "is why this book has as much to do with the Henry's Fork as with the Risle." At least one of the flies introduced by French Fishing Flies more than twenty-five years ago, the Cul de Canard...