JET PLANES WORK LIKE THIS

The past, present, and future tenses of British jet craft are cross-sectioned here. In 1928 the fastest R.A.F. fighters flew at only 150 m.p.h. Today research machines are being designed to fly at 4,000 m.p.h. There are diagrams of jet engines. The text is technical and printed in fine type. It is a cogent exposition of the propellorless flight in Britain.