SI AAO Po 
(Cio heh ONS 
LIST OF PLATES 
A conception of prehistoric man . 
The Ptolemaic and the Copernican theories of the universe 
The appearance of our universe 
Pika Peak, a 
an example of erosion 
Camarasaurus, a giant reptile of the Marascic 
Woolly rhinoceros in combat with bison 
What breeding will do . 
Human embryo and pig embryo . 
Human embryo of four to six weeks . 
Human embryo of six to eight weeks 
The Age of Steel 
The Age of Iron 
The Bronze Age. 
The New Stone Age 
The Old Stone Age 
Skulls of man and gorilla . 
Hand silhouettes in prehistoric caves 
The Victor Glacier, Alberta, Canada 
Glacial striation : 
Loess country, Hecehiestenn China ; 
A raised beach . . 
A mammoth hunt in the Old Stone Age 
Varves in glacial clay 
Restoration of Cro-Magnon man ? 
Caves at Grimaldi, near Mentone, France . 
The Grimaldi skeletons 
The Gorge of Neanderthal 
The Neanderthal cave . | 
Restoration of Neanderthal man . 
Side view of Neanderthal cranium 
The Gibraltar skull 
Rock-Gun, 
Gibraltar 
. Frontispiece 
2 
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