图书简介

Preface; Abbreviations; Historical Introduction: 1. The early exploration of western America; 2. The purchase of Louisiana; Part I. A Geographical Analysis of Western America: Introduction; 3. The physical geography of the region; 4. The climate of the region; 5. The natural drainage of the region; 6. The natural vegetation of the region; 7. The animals of the region; 8. The Indian inhabitants of the region; Part II. The Exploration of Western America 1800–50: Introduction; 9. The discovery of a northern trans-continental route; 10. The discovery of a central trans-continental route; 11. The discovery of southern trans-continental routes; 12. The discovery of the Great Basin and the routes over the Sierra Nevada, 1832–53; 13. The representation of western America on maps published between 1800 and 1850; 14. Conclusion; Bibliography; Index.

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