In 1931, several years before the RAE work on box wing theory which was mentioned (in the January Journal), I joined Armstrong Whitworth Aircraft. They were designing the Atalanta monoplane for Imperial Airways, and were in difficulties with the wing stressing, my chief H. A. Francis having, as he said, applied to RAE for advice and “got the bird”. The late J. K. Reid, their leading “methods man”, had already produced the simple exponential theory of uniform box torsion which RAE later re-discovered, but unfortunately, for our tapered thin-skin wing, we soon found out that this did not work.