| FIG. | | PAGE |
| 1. | Outline tracings of skulls of Pithecanthropus etc. (From Dubois) | 5 |
| 2. | Outline tracings of Jawbones, (A) Mauer (B) ancient Briton | 11 |
| 3. | Tooth from Taubach: surface of crown. (From Nehring) | 22 |
| 4. | Tooth of Chimpanzee. (From Nehring) | 22 |
| 5, 6. | Tooth from Taubach: inner and outer sides. (From Nehring) | 23 |
| 7. | Human skull from Krapina. (From Birkner) | 25 |
| 8. | Tracings of teeth from Krapina and Mauer. (From Kramberger) | 29 |
| 9. | Human skull from La Chapelle-aux-Saints. (From Birkner) | 33 |
| 10. | Outline tracings of skull from La Chapelle-aux-Saints etc. (From Boule) | 35 |
| 11. | Contours of skulls, (A) New Guinea man (B) European woman | 36 |
| 12. | Outline tracing of human skull from Le Moustier | 40 |
| 13. | Outline tracings of jawbones from Mauer and Le Moustier | 41 |
| 14. | Outline tracings of jawbones from Mauer, La Naulette, etc. (From Frizzi) | 42 |
| 15. | Outline tracings of jawbones, (A) ancient Briton (B) Le Moustier (C) Mauer | 43 |
| 16. | Outline tracings of the Forbes Quarry (Gibraltar) skull. (From Sera) | 48 |
| 17. | Human skull of the Grimaldi-type. (From Birkner) | 51 |
| 18. | Outline tracings of skulls from Galley Hill etc. (From Klaatsch) | 58 |
| 19. | Section of the strata at Trinil in Java. (From Dubois) | 64 |
| 20. | View of the Mauer sand-pit. (From Birkner) | 65 |
| 21. | Section of the Krapina rock-shelter. (From Birkner) | 69 |
| 22. | Plan of the cave at La Chapelle-aux-Saints. (From Boule) | 72 |
| 23. | Two sections of the Grotte des Enfants, Mentone. (From Boule) | 77 |
| 24. | Chart of the relative duration of Miocene, Pliocene, and Pleistocene time. (From Penck) | 107 |
| 25. | Chart of oscillations of snow-level in the Glacial period. (From Penck) | 119 |
| 26. | Outline tracings of skulls of Pithecanthropus etc. (From Dubois) | 129 |
| 27. | Position of Palaeolithic Man in the scale of evolution. (From Cross) | 131 |
| 28. | Thigh-bones arranged to illustrate Klaatsch's theory. | 136 |
| 29. | The human skeleton found beneath the Boulder-clay at Ipswich. (From a drawing by Dr Keith, reproduced with permission) | 153 |
