THE CONQUEST OF THE AIR 103 



stick. Parallel to this card, at the other end of the stick, fasten 

 one 8 by 1 1 inches, its middle on the stick. Notch the stick 

 under this near the end. Bend a piece of telephone wire in the 

 form of a Y. Tie one end of a rubber band to the tip of each 

 arm of the Y. Tie one end of a 6-inch string to the free end of 

 one band, the other end to the other band. Hold the base of the 

 Y in the left hand. Hold the aeroplane by the end near the small 

 cards, between thumb and finger of the right hand, the string 

 of the sling in the notch near the front end. Pull it back, 

 stretching the rubbers, and release it for its flight. 



