Mr. Giddings was glad to accept the invitation to the trial flight.  He and his son met the Ross boys at the old race-course Saturday afternoon.  This immense, level field, with its one-mile oval and great empty sheds, at one time had been the county's boasted fair-grounds, but two years prior to the opening of our story it had been sold to Mr. Giddings, whose residence property stretched down the side of Shadynook Hill and joined it.  New fair-grounds had then been established in another and more centrally located section of the district.  In the old grounds the boys of the neighborhood now went to fly their kites and model airplanes, to hold impromptu bicycle and foot races, and to play tag and hide-and-go-seek in the cavernous sheds and around the numerous sagging stables.