A truly excellent first hardback edition of this key climate change novel, as with his 1966 novel The Crystal World anticipating the more universal adoption of actual climate change science by many years. The novel also imagines mankind’s innate primitive tendencies when exposed to an environment more akin to the Triassic period. Very hard to find in such fine condition, with the jacket correctly priced at 15/-. This edition is preceded by a US paperback edition, but this Gollancz edition is the preferred, collector’s edition.