Competing planes must be flown from a point 200 miles or more, (air line) from Selfridge Field, Mt. Clemens, Mich. In order to stimulate interest among civilians, army and navy pilots will not compete in this race. In view of the wide variety of planes whose owners have signified their intentions of entering this event, the Contest Committee after thorough deliberation of all means by which a contest may be judged fairly, will base its findings and award prizes according to the following four charts :