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Updated: May 14, 2025
The coral polyp saturates itself with the lime-salts of the sea-water, much as the bone-corpuscles with those of the blood and lymph, and thus protects itself in life and becomes the flying buttress of a continent in death. In the familiar connective-tissue, or "binding-stuff," we find a process similar in kind but differing in the degree, so to speak, of its degradation.
It tells that the human body before its birth passes through all the different stages of the animal kingdom such as the polyp, fish, reptile, dog, ape, and at last, man.
I'm more of a man than you, you tin-horn; I want no favours; I do a man's work; I live a man's life; I am a man, and I'm proud of it, but you ; Nome's full of your kind; you need a woman to support you; you're a protoplasm, a polyp. Those Swedes changed their stakes to cover my fraction.
The coral polyp seems to be doing only desultory work, and that mostly on the northeast or Atlantic side of the islands; everywhere else it has abandoned the field to the erosive action of the waves. Columbus said that Guanahani had abundance of water and a very large lagoon in the middle of it. He used the word laguna lagoon, not lago lake.
A medusa begets a ciliated larva, the larva begets a polyp, the polyp begets a strobila, and the strobila begets a medusa again; the cycle of reproduction being completed in the fourth generation. A frog lays an egg, which egg becomes a tadpole; the tadpole, after more or fewer intermediate stages, becomes a frog.
He sealed this with the feeling that he had done well indeed for a first time. He had worked in "practise v. and n." and "exprest," and, if the head office should complain that he had not used enough of the words in the list, he could point to "polyp" and "estivate" and "etiology."
And against that dazzling background black silhouettes were dancing like midges under a microscope, like Indians swinging their tomahawks. They were still mere specks. Sometimes they disappeared entirely and then leaped high, and came nearer, their rifles wriggling in the air like the feet of a polyp. Gradually their cries became audible and swelled louder and louder like the far barking of dogs.
All at once I almost tripped over a massive iron bar; others, a rusty network of them, grew into being above and around me, like the arms of a ghostly polyp. 'What infernal spider's web is this? I thought, and stumbled clear. I had strayed into the base of a gigantic tripod, its gaunt legs stayed and cross-stayed, its apex lost in fog; the beacon, I remembered.
First division in the polyp group, the class Spongiaria has been created by scientists precisely for this unusual exhibit whose usefulness is beyond dispute. The sponge is definitely not a plant, as some naturalists still believe, but an animal of the lowest order, a polypary inferior even to coral.
The Actinozoa have already been described as formed on the type of the sea-anemone and the coral polyp, that is, they are all animals with a radiate structure, attached to one end, and having their only opening at the other end, which is surrounded by tentacles. In the Alcyonarian forms belonging to this great group these tentacles are always eight in number, and fringed on both sides.
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