| 1. LEEUWENHOEK: First of the Microbe Hunters | 3 |
| 2. SPALLANZANI: Microbes Must Have Parents! | 23 |
| 3. PASTEUR: Microbes Are a Menace! | 52 |
| 4. KOCH: The Death Fighter | 97 |
| 5. PASTEUR: And the Mad Dog | 134 |
| 6. ROUX AND BEHRING: Massacre the Guinea-Pigs | 169 |
| 7. METCHNIKOFF: The Nice Phagocytes | 190 |
| 8. THEOBALD SMITH: Ticks and Texas Fever | 215 |
| 9. BRUCE: Trail of the Tsetse | 232 |
| 10. ROSS VS. GRASSI: Malaria | 256 |
| 11. WALTER REED: In the Interest of Science--and for Humanity! | 286 |
| 12. PAUL EHRLICH: The Magic Bullet | 308 |
| INDEX | 331 |