| PAGE | |
| Author’s Preface to the First Edition | vii |
| Author’s Preface to the Second and Third Editions | xi |
| Note by the Translator | xvii |
| Steppes and Deserts | 1 |
| Annotations and Additions | 27 |
| Cataracts of the Orinoco | 207 |
| Annotations and Additions | 233 |
| Nocturnal Life of Animals in the Primeval Forest | 257 |
| Annotations and Additions | 273 |
| Hypsometric Addenda | 277 |
⁂ For General Summary of the Contents of the First Volume,
see page 289.