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Ancestry of the anthropoid apes 49
Pliocene climate, forests, and life 60
Transition to the Pleistocene 62
The first glaciation 64
The First Interglacial Stage 66
Early Pleistocene fauna 69
The Trinil race 73
Eoliths, or primitive flints 84
The second glaciation 86
The Second Interglacial Stage 90
The Heidelberg race 95
Migrations of the reindeer 102
The third glaciation 104