CHAPTER XXII

.

THE PRIMITIVE OCEAN.

The Giant-Book of the Earth-rind.--The Sea of Fire.--Formation of a solid Earth-crust by cooling.--The Primitive Waters.--First awakening of Life in the Bosom of the Ocean.--The Reign of the Saurians.--The future Ocean. 433

## PART III.

THE PROGRESS OF MARITIME DISCOVERY.

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