| Introduction | |
| 1 | Introduction to scientists |
| Scientists of the nineteenth century | |
| 2 | Charles Darwin, Naturalist, geologist, and biologist (1809-1882) |
| 3 | Louis Agassiz (1807–1873) |
| 4 | Samuel Morse, American inventor and painter (1791-1872) |
| 5 | Martin Hans Boyè (1812–1907) |
| 6 | Paul Nadar: Interview with Michel-Eugène Chevreul (8 September 1886) |
| Introduction | |
| 1 | Introduction to scientists |
| Scientists of the nineteenth century | |
| 2 | Charles Darwin, Naturalist, geologist, and biologist (1809-1882) |
| 3 | Louis Agassiz (1807–1873) |
| 4 | Samuel Morse, American inventor and painter (1791-1872) |
| 5 | Martin Hans Boyè (1812–1907) |
| 6 | Paul Nadar: Interview with Michel-Eugène Chevreul (8 September 1886) |
