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Nothing, for example, more solid than the lime-stones, or marbles, and iron-stones; nothing more hard or solid than the chirt or flint; and all these are found among the horizontal strata.
She does rusticate sometimes: crumbly sand-stones, with their ripple-marks filled with red mud; dusty lime-stones, which the rains wash into labyrinthine cavities; spongy lavas, which the volcano blast drags hither and thither into ropy coils and bubbling hollows; these she rusticates, indeed, when she wants to make oyster-shells and magnesia of them; but not when she needs to lay foundations with them.
The second kind, again, are not so common in this country, unless we consider the shells and coralline bodies in our lime-stones, as exhibiting the same example, which indeed they do. But I have a specimen of marble from Spain, which may be described, and which will afford the most satisfactory evidence of the fact in question.
For if euery housholde haue one or two to cracke nuts, grinde shels, whet copper, and sometimes other stones for hatchets, they haue ynough: neither vse they any digging, but onely for graues about three foote deepe: and therefore no marueile that they know neither quarries, nor lime-stones, which both may be in places neerer then they wot of.
Here again the alpine lime-stones, which, according to the present naturalists, should be primitive, are plainly homologated in their origin with strata formed of sand.
Lime-stones naturally cannot be used for that purpose, and volcanic stones have often to be brought from quite a distance, so that these cooking-stones are treated with some care. In place of knives the natives use shells or inland bamboo-splinters, but both are rapidly being replaced by European knives.
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