1. The Beginnings.- 2. Alsace and the New World.- 3. South America.- 4. The Great Volcanoes of the Andes.- 5. Paris, Lyon and Paris Again.- 6. The Experimental Farm and Crop Rotation.- 7. The Experimental Farm and Animal Nutrition.- 8. Conservatoire des Arts et Metiers.- 9. The Conservatoire and Politics.- 10. The Plant and Nitrogen.- 11. The Nitrification of the Soil.- 12. Education and Hygiene.- 13. Photosynthesis, or the Plant and Carbon Dioxide.- 14. The Metallurgical Period.- 15. The Last Years.- 16. Assessment.- Postscript.- Appendix 1. Syllabus of Lectures in Agricultural Chemistry, 1862-63.- Appendix 2. Syllabus of Lectures in Agricultural and Analytical Chemistry, 1873-74.- Abbreviations.- Notes.- Boussingault's Scientific Papers.- Works of Boussingault Published In Book Form.- Documentary Material.- List Of Works Consulted.- Index of Names.- Index of Subjects.