Locusts and Wild Honey by John Burroughs
page 66 of 204 (32%)
page 66 of 204 (32%)
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When the water finds an outlet through the bottom of a dam, a suction
or whirling vortex is developed that generally goes round in the same direction. A morning-glory or a hop-vine or a pole-bean winds around its support in the same course, and cannot be made to wind in any other. I am aware there are some perverse climbers among the plants that persist in going around the pole in the other direction. In the southern hemisphere the cyclone revolves in the other direction, or from left to right. How do they revolve at the equator, then? They do not revolve at all. This is the point of zero, and cyclones are never formed nearer than the third parallel of latitude. Whether hop-vines also refuse to wind about the pole there I am unable to say. All our cyclones originate in the far Southwest and travel northeast. Why did we wait for the Weather Bureau to tell us this fact? Do not all the filmy, hazy, cirrus and cirro-stratus clouds first appear from the general direction of the sunset? Who ever saw them pushing their opaque filaments over the sky from the east or north? Yet do we not have "northeasters" both winter and summer? True, but the storm does not come from that direction. In such a case we get that segment of the cyclonic whirl. A northeaster in one place may be an easter, a norther, or a souther in some other locality. See through those drifting, drenching clouds that come hurrying out of the northeast, and there are the boss-clouds above them, the great captains themselves, moving serenely on in the opposite direction. Electricity is, of course, an important agent in storms. It is the great organizer and ring-master. How a clap of thunder will shake down the rain! It gives the clouds a smart rap; it jostles the vapor so that the particles fall together more quickly; it makes the drops let go in double and treble ranks. Nature likes to be helped in that way,--likes |
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