London, John Lane and The Bodley Head, 1923. First edition, first impression. Hardback. A very good copy, in the jacket. "Science-fiction, concerning an old man rejuvenated to his youth by a drug made from ape glands." [F&SF Magazine]. Some edge wear, rubbing and chipping to the jacket. Gift inscription to the front pastedown. A few nicks to the spine. Tear to the cloth at the head of the spine. Some foxing. A slight lean. A nice copy. [11534, Hyraxia Books].