402. Why does dew rest upon the upper surfaces of leaves?
Because the under surfaces receive the radiated warmth of the earth.
"And it was so: for he rose up early on the morrow, and thrust the fleece together, and wringed the dew out of the fleece, a bowl full of water."
403. Why are cultivated lands subject to heavier dews than those that are uncultivated?
Because cultivation breaks up the hard surface of the earth, and thus its radiating power is increased.
404. Why is the gravel walk through a lawn comparatively dry while the grass of the lawn is wet with dew?
Because gravel is a bad radiator, but grass is a good radiator.