Pronounced by the most eminent physician of the day to be "a true hybrid wherein the nature of woman presides over that of the brute," Julia Pastrana stood apart from the other carnival acts. She was fluent in English, French and Spanish, an accomplished musician with an exquisite singing voice, equally at ease riding horseback and turning pirouettes--but all anyone noticed was her utterly unusual face. Alternately vilified and celebrated, Julia toured...