The beautiful Nautilus polo fields, at Miami Beach, Fla., as viewed from the air, December 21, 1929. This photo was taken from the dirigible ''Defende'' which is being stationed at Miami Beach for the winter. The polo fields, four in number, can be seen as huge rounded squares of smooth turf. They are ranked among the best in the country, and many of the best polo players in the world have performed on them. (AP Photo)