London, Constable, 1936. First edition, first impression. Hardback. A very good copy, in the jacket. Collins was an Australian writer, mostly writing sea-faring adventures. This novel is, however, more of an sf idea, wherein a plane can fly high up in the atmosphere. Some chipping to the jacket. Particularly to the top edge. A little tanning and marking to the leaves. [10478, Hyraxia Books].