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Is it that the fiery and spiritual power which it hath, being once provoked and (as it were) angered, putteth forth itself so much the more, and mounteth upward? Or is it because the weight, forcing the boughs suddenly, oppresseth and keepeth down the airy substance which they have, and driveth all of it inward; but the same afterwards, having resumed strength again, maketh head afresh, and more eagerly withstandeth the weight? Or, lastly, is it that the softer and more tender branches, not able to sustain the violence at first, so soon as the burden resteth quiet, by little and little lift up themselves, and make a show as if they rose up against it?
XXXIII. WHAT IS THE REASON THAT PIT-WATER IS LESS NUTRITIVE THAN EITHER THAT WHICH ARISETH OUT OF SPRINGS OR THAT WHICH FALLETH DOWN FROM HEAVEN?
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Is it because it is more cold, and withal hath less air in it? Or because it containeth much salt from the earth mingled therewith?—now it is well known that salt above all other things causeth leanness. Or because standing still, and not exercised with running and stirring, it getteth a certain malignant quality, which is hurtful to both plants and animals, and is the cause that it is neither well concocted nor able to feed and nourish any thing? Hence it is that all dead waters of pools are unwholesome, for that they cannot digest and despatch those harmful qualities which they borrow of the evil property of the air or of the earth.
XXXIV. WHY IS THE WEST WIND HELD COMMONLY TO BE THE SWIFTEST, ACCORDING TO THIS VERSE OF HOMER:
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Let us likewise bestir our feet, As fast as Western winds do fleet.Il. XIX. 415.
