CHAPTER XVII

Galapagos Archipelago — The whole group volcanic — Number of craters — Leafless bushes — Colony at Charles Island — James Island — Salt-lake in crater — Natural history of the group — Ornithology, curious finches — Reptiles — Great tortoises, habits of — Marine lizard, feeds on seaweed — Terrestrial lizard, burrowing habits, herbivorous — Importance of reptiles in the Archipelago — Fish, shells, insects — Botany — American type of organisation — Differences in the species or races on different islands — Tameness of the birds — Fear of man an acquired instinct.