THE FIRST OF A SERIES: On his first flight with his new Cambridge sailplane, the Duke of Grafton (right) obtained his "C" certificate. This machine, designed and built by Zander and Weyl, is the first of a small series and has already proved itself with soaring flights of more than an hour's duration.
AT THE WASSERKUPPE: Herr Wolf Hirth, recently returned from America, is making a fairly sharp turn on the Grunau and is seen over the open girder tail of a practice glider during the competitions now being held by the Rhon-Rossitten Gesellschaft.
This striking photograph of Bradwell Edge shows, down below, the factory chimney known to pilots as the "thermal indicator." Its smoke indicates the presence of a thermal current rising from the valley. When this picture was taken the competitor in the Grunau Baby was struggling to maintain his height.