Planet of Peril (Classic Ace SF, F-211)

Planet of Peril follows the story of Robert Grandon of Terra who finds himself on the planet Venus following a process which enables the subject to trade consciousness' with their counterparts on other worlds. Venus is at a similar stage of evolution that Earth was at during the Carboniferous era - thus densely populated by Ferns, lichens, fungi and other greenery. The humanoids range vastly from blood-sucking bat-men to cavern dwelling wretches with no eyes! A technologically sophisticated race operate fleets of airships which are controlled by telekinesis, whilst more primitive humans find themselves enslaved by gigantic termites.