Chapter 7

_SPECIES AND SPACE._

The geographical distribution of animals presents difficulties.--These not insurmountable in themselves; harmonize with other difficulties.--Fresh-water fishes.--Forms common to Africa and India; to Africa and South America; to China and Australia; to North America and {x} China; to New Zealand and South America; to South America and Tasmania; to South America and Australia.--Pleurodont lizards.--Insectivorous mammals.--Similarity of European and South American frogs.--Analogy between European salmon and fishes of New Zealand, &c.--An ancient Antarctic continent probable.--Other modes of accounting for facts of distribution.--Independent origin of closely similar forms.--Conclusion ... _Page_ 144