. The testimony of the rocks; . AMMONITES HUMPR1ESIANU8. {Oolite.) gated, like the old ammonites, are found to be sufficientlystrong to resist almost any degree of pressure without thewonted addition of an interior fi-amework. Similar evi-dences of design appear in the other extinct molluscs pccu- ON THE TWO THEOLOGIES. 2-43 liar to these geologic ages, such as tlic liamite and belemnite seems to have miited the principle of thefloat to that of the sinker, as we see both united in some ofour modern life boats, which are steadied on their keel byone principle, and preserved from f

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. The testimony of the rocks; . AMMONITES HUMPR1ESIANU8. {Oolite.) gated, like the old ammonites, are found to be sufficientlystrong to resist almost any degree of pressure without thewonted addition of an interior fi-amework. Similar evi-dences of design appear in the other extinct molluscs pccu- ON THE TWO THEOLOGIES. 2-43 liar to these geologic ages, such as tlic liamite and belemnite seems to have miited the principle of thefloat to that of the sinker, as we see both united in some ofour modern life boats, which are steadied on their keel byone principle, and preserved from foundering by the other;or as we~ find them united by the boy in his mimic smack,which he hollows out and decks, in order to render it suffi-ciently light, while at the same time he furnishes it with akeel of lead, in order to render it sufficiently steady. Theold articulata abound in marks of ingenious mechanicalcontrivance. The trilobites were covered over back and Fig. 95.

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