Ob-Serve, My Child, The House-Hold Fly, With His Ex-Traor-Di-Na-Ry Eye: What-Ev-Er Thing He May Be-Hold Is Mul-Ti-Plied A Thou-Sand-Fold. We Do Not Need A Com-Plex Eye When We Ob-Serve The Household Fly: He Is So Vol-A-Tile That He In Ev-Ery Place At Once Can Be; He Is The Buzz-Ing In-Car-Na-Tion Of An-I-Mate Mul-Ti-Pli-Ca-Tion. Ah! Chil-Dren, Who Can Tell The Why And Where-Fore Of The House-Hold Fly?