Show I Aviation Needs j The swift development of the science science sd ence once of aviation has produced a number number num nurn- ber her of highly important questions which in the opinion of experts must bo be solved by the chemist says Pou lar tar Mechanics Ways Wars must be found for example to overcome the susceptibility susceptibility of machines to sudden changes changes' of temperature and some sort of a chemical compound is needed to make cloth used In aeroplanes and elsewhere elsewhere elsewhere else else- where waterproof and slow burning Other fields for the chemist are suggested by the demand for rustproof metal parts and light alloys |