ILLUSTRATIONS

Beside him, shivering and whimpering, were two wolf cubs[Frontispiece]
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Og squatted down close at hand and watched them[48]
The pack stopped. Og and his fire arrested them[56]
Og beheld in the lower branches three big forms[64]
The great creature carried him as easily as Og would have carried a young goat[76]
It was trying to trace the direction of an odor[94]
The boulder, with a crunching noise, came out of its insecure resting place[100]
Then he proceeded with his skinning, while the wolf cubs looked silently on[102]
Great bats, almost as big as Og himself[138]
The huge serpent raised its head and shining neck aloft and glared about the cavern[142]