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 Structures will vanih: The Ground will be clear before us; and if we loe ourelves in the open Way, 'tis eay to be et right again.

Spar formed by Nature, as above related, may either concrete in its pure State as oon as made; or it may pas, while yet fluid, thro' various Strata of earthy, aline, Mineral, and other Matter, and receive great Changes both in Form and Colour from them: It may appear to us therefore, according to. thee Circumtances, either

Or from the mere Nature of its Concretion, it may appear as Curtains pread upon a Wall:

According to thee Accidents it may be thrown ate a Kind of Method, under the Terms Genus and Species, to great Advantage. The