CONTENTS. XV 



CHAPTEE 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 Eats — Volcanic Bombs 

 — Beds of Infusoria — Bahia — Brazil — Splendour of Tropical 

 Scenery — rcrnambuco — Singular Eeef — Slavery — ■ Return 

 to England — Retrospect on our Voyage Page 483 



Index 507 



