The Philadelphia naturalist Thomas Gentry argues that signs of mind can be found throughout the living world, from insect-eating sundews and slime moulds to starfish, earthworms, fiddler and hermit crabs, spiders, cicadas, turtles and birds. Each chapter describes the creature’s habits in detail and draws out the evidence for intelligence.
A curious, observant book of natural history from 1900, more speculative than modern science allows. Download the free EPUB.