| 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] |