Tornadoes, Typoons and Waterspouts

The Great Circular Storms occur in sub-tropical belt. They may be as much as 1,200 miles in diameter and in the storm ring the wind blows at 100 miles per hour. The rainfall is enormous and thunder and lightning add to the terror. In the centre is an area of dead calm in which the sun shines brightly.

The Typhoon of the China seas is similar in character.

Then there is a small but even more terrible type of circular storm, the Tornado or whirl-wind, sometimes no more than a hundred yards in diameter. It shows as a funnel-shaped cloud, purple-black in colour, with edges white as snow, and it leaps and dances across the country like a mad giant. Nothing can stand against its force.

A Waterspout is really a tornado at sea. It is a violent whirlpool which produces a dark, funnel-shaped cloud tapering down-wards towards the sea so that it resembles a spout or trunk joining the sea to the cloud.

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Does pearls reproduce by itself through time

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