cOiVTEi^'i:^ 



CHAPTER XIX 



Sydney — Excursion to Bathurst — Aspect of the woods — Party of natives — Gradual 

 extinction of the aborigines — Infection generated by associated men in health — 

 Blue Mountains — View of the grand gulf-like valleys — Their origin and forma- 

 tion — Bathurst, general civility of the lower orders — State of Society — Van 

 Diemen's Land — Hobart Town — Aborigines all banished — Mount Wellington 

 — King George's Sound — Cheerless aspect of the country — Bald Head, 

 calcareous casts of branches of trees — Party of natives — Leave Australia 



Pages 459-480 



CHAPTER XX 



xveeliiig Island — Singular appearance— Scanty Flora — Transport of seeds — Birds and 

 insects — Ebbing and flowing springs — Fields of dead coral — Stones transported 

 in the roots of trees — Great crab — Stinging corals — Coral-eating fish — Coral 

 formations — Lagoon islands or atolls — Depth at which reef-building corals can 

 live — Vast areas interspersed with low coral islands— Subsidence of their founda- 

 tions — Barrier-reefs — Fringing-reefs — Conversion of fringing-reefs into barrier- 

 reefs, and into atolls — Evidence of changes in level — Breaches in barrier-reefs — 

 Maldiva atolls ; their peculiar structure — Dead and submerged reefs — Areas 

 of subsidence and elevation —Distribution of volcanoes — Subsidence slow and 

 vast in amount . . . . . . .481-512 



CHAPTER XXI 



Mauritius, beautiful appearance of — Great crateriform ring of mountains — Hindoos — 

 St. Helena — History of the changes in the vegetation — Cause of the extinction of 

 land-shells — Ascension — Variation in the imported rats — Volcanic bombs — Beds 

 ot infusoria — Bahia, Brazil — Splendour of tropical sceneiy — Pernambuco — 

 Singular reefs — Slavery — Return to England — Retrospect on our voyage 



513-538 



INDEX 539-551 



