The sudden new world -- The road of early man -- The dead hand of the ages -- The great ice age -- Early man in the old world -- What the bones have to say --The artifacts of early man in the new world -- Early man and the great extinction -- Pygmies, Australoids, and Negroids, before Indians? -- Did the Indian invent or borrow his culture -- The Indian in agriculture -- Puzzles, problems and half-answers.
