London, Hutchinson, nd [1928]. First edition, first impression. Hardback. A very good copy. An uncommon sf involving a time machine, in this case the protagonist experiences the next stage of human evolution, a stage without sexual reproduction. The jacket is a little worn, with a few short tears and a couple of larger one, and a few chips, and a little soiling. Foxing, though light, does affect a fair few leaves. Reading lean. [10552, Hyraxia Books].