In the Summer of 1854, Longfellow wrote in his diary: "I have at length hit upon a plan for a poem on the American Indians, which seems to me the right one and the only. It is to weave together their beautiful traditions as whole." What emerged the next year was "The Song of Hiawatha," a composite of legends, folklore, myth, and characters that presents, in short, lilting trochees (who can forget "By the shore of Gitche Gumme / By the shining Big-Sea-Water"?),...