LOGICAL UNCONVENTIONALITY? The De Bruyne-Maas Ladybird, which has been used at Cambridge for the purpose of trying out a number of ingenious ideas. It will be seen that the machine is a shoulder-wing monoplane with a tricycle undercarriage, and the design incorporates various interesting items of what may be termed near-bakelite construction. The trailing edge of each of the main undercarriage trousers can be turned to provide air-braking surface. Mr. R. G. Doig carried out the initial test-flying both wit h the original Scott engine and with the Bristol Cherub with which the machine is now fitted.