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These points are minute cavities, surrounded with tiny cilia or hairs, which connect with the ends of the nerves. The ears of the frogs and all higher animals are, like the tongue-bone and the lower jaw, derived originally from portions of gills, which the aquatic ancestors of living animals used to draw the oxygen from the water.

The walls of the larynx contain strips and plates of cartilage; while the nostrils and the pharynx are kept open by their bony surroundings. Cilia, n. Nucleus. The air passages are kept clean by cells especially adapted to this purpose, known as the ciliated epithelial cells. They line the mucous membrane in most of the air passages, and are so placed that the cilia project into the tubes.

The protoplasm of Algæ and Fungi becomes, under many circumstances, partially, or completely, freed from its woody case, and exhibits movements of its whole mass, or is propelled by the contractility of one, or more, hair-like prolongations of its body, which are called vibratile cilia.

He stamped with his feet and kissed the gaudy pictures, and his tears made lots of dark spots on them. Then he rushed downstairs into the dining-room, where his father was still sitting at the table and his mother packing cakes and fruit into her small bag. Oh, she had wanted to go for a walk with him. That would be the very last thing he would do. "Where has Cilia gone?

Cilia had sent her basket on by goods train, and she had nothing to carry now but a little leather bag and a cardboard box tied with string. So she could get on quickly. But on her way to the station she stopped all at once: the school would be over at one o'clock, it was almost eleven now, it really did not matter if she left somewhat later.

The protoplasm of Algae and Fungi becomes, under many circumstances, partially, or completely, freed from its woody case, and exhibits movements of its whole mass, or is propelled by the contractility of one, or more, hair-like prolongations of its body, which are called vibratile cilia.

It places itself upon the surface of the animal on which it feeds, and, if it have any hard parts, it simply sucks the juices, dropping the dead carcass immediately after; but it swallows whole the little Acalephs of other Species and other soft animals that come in its way. Early in summer these Jelly-Fishes drop their eggs, little transparent pear-shaped bodies, covered with vibratile cilia.

In about four hours from their being set free, they had attained a sixth of the length of the parent, with the characteristic cilia, though at first they were quite motionless; and, in four hours more, they had attained the dimensions and exhibited all the activity of the adult.

"I've brought such a lot of pretty things for you." Then he grew animated. "Have you also brought something for Cilia? She could find use for a workbasket with all kinds of things in it very well: she has only an old one she used at school, you know. Oh, she can tell such splendid stories ugh, that make you shiver. And how she can sing.

There you have it in a nutshell. The mucous membrane of the larynx and the bronchial tubes, to enlarge upon its duty for a moment, is endowed with very fine, hair-like processes called cilia, whose action is to waft secretions from the interior of the lungs outward.