PUPIN motoplane. (Emile Pupin and Marc Denaus, 114 Wardour St., London W)

   Early in 1911, a machine of unusual layout arrived at Hendon. It was a monoplane with an open girder fuselage mounted on a two wheel undercarriage with two skids, and a tail wheel on a tall structure. The engine, of unidentified type, was mounted in the center and drove, through chains and shafts, a pair of propellers mounted alongside the rear fuselage. A long rectangular fin was mounted above the forward fuselage with a rudder at the tail.
   Three pairs of equal span wings were fitted, which could be varied in incidence and moved differentially in conjunction with the rudder. Patent No 27 476/1909 is relevant.
   On test on 10 February 1911, three of the wings were damaged and that was the last heard of the motoplane.