ILLUSTRATIONS 
Group of Ordovician fossils 
Silurian crustacean (Kurypterus ieounttis) 
Devonian brachiopods 
Group of Devonian cephalopods 
A Devonian fish 
Group of Carboniferous fossils 
Group of Carboniferous crinoids 
Carboniferous plant fossils 
Carboniferous plant fossils 
Ideal Carboniferous landscape 
Ideal Jurassic landscape . 
Group of Cretaceous fossils 
Group of Cretaceous cephalopods 
A Cretaceous cephalopod 
Section of cephalopod 
Group of Cretaceous fossils 
Brontosaurus 
Ichthyosaurus . 
A flying reptile - 
Ichthyornis victor, a bird with teeth 
Archeeopterix 
Hesperornis, a bird with iaath, 
Ideal Cretaceous landscape 
A group of Eocene fossils 
. A Tertiary cephalopod 
Dinornis . ; 
Sketch map of elias Rand ; 
Sketch map of Cretaceous land 
Sketch map of early Tertiary land . 
Ideal landscape of the ice age . 
Ideal map of North American ice sheets 
Rocky terminal moraine, Cape Ann, Mass. 
Terminal moraine, Ithaca, N. Y. 
Glacial striz 
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