Grandpa himself delighted in running out upon the wings of the Sky-Bird at the stops.  He pulled the control wires and made the ailerons swing up and down, which always raised a laugh among the crowds.  Another favorite pastime with him was to post himself in front of the reflector of the big searchlight up on the cabin, and make the most comical grimaces at his image on the polished reflector inside, sometimes uttering queer noises as if he were crying, and at other times chattering with the utmost anger at the phantom monkey, mixing these demonstrations up with wild dashes around behind the lamp to see if the mimicking animal were there.  No matter what language the natives of each port might speak, they never failed to understand and appreciate these little sideshow comedies of Grandpa's.  And when it would become noised about among them that this particular monkey had traveled all the way from South America through the air with the "bird-men," their awe for him was amusing to behold.