An essay: The World’s First Diving-Bell

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I tried many methods to recite words. But they were just recited.
I still couldn't use them and even undterstand them till I got new
way which was learning words within reading.

The World’s First Diving-Bell

Only recently in his history has man been able to live under water for any length of time, and one of his first steps in this direction was the diving-bell. Thousands of years before this the water-spider had evolved his own method of penetrating this new world beneath the surface of the water.

To begin with, he can quite happily swim below the surface of the water, wearing his equivalent of the aqualung in the shape of an air bubble which he traps beneath his stomach and between his legs, so that he may breathe under water. This alone is extraordinary, but the water-spider goes even further: he builds his home beneath the surface of the water, a web shaped like an inverted cup, firmly anchored to the water-weeds. He then proceeds to make several journeys to the surface, bringing with him air bubbles which he pushes into this dome-shaped web until it is full of them, and in this he can live and breathe as easily as if he were on land.

In the breeding season he picks out the house of a likely-looking female and builds himself a cottage next door, and then, presumably being of a romantic turn of mind, he builds a sort of secret passage linking his house with that of his lady-love. Then he breaks down her wall, so that the air bubbles in each house intermix, and here in this strange underwater dwelling he courts the female, mates with her, and lives with her until the eggs are laid and hatched, and until their children, each carrying their little globule of air from their parents’ home, swim out to start life on their own.

from
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