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The piston stroke affects only the work of breathing; it does not alter the density, makes hardly any change in that which is heavier than water. To lighten the weight, the caddis worm must first rise to the surface. With this object, it scales the grasses of one support after the other; it clambers up, sticking to its purpose in spite of the drawback of its faggot dragging through the tangle.
One would begin with some pebbles; then she would stick on a piece of green wood; then she found a shell, and stuck it on too; and the poor shell was alive, and did not like at all being taken to build houses with; but the caddis did not let him have any voice in the matter, being rude and selfish, as vain people are apt to be; then she stuck on a piece of rotten wood, then a very smart pink stone, and so on, till she was patched all over like an Irishman's coat.
Caddis, M.P., pursuing the riddle of popularity, which irritated and repelled as constantly as it attracted him, would have come nearer to an instructive presentment of it, by listening to these plain fellows, than he was in the line of equipages, at a later hour of the day.
There were also City magnates, and Lakelands' neighbours: the gentleman representing Pride of Port, Sir Abraham Quatley; and Colonel Corfe; Sir Rodwell and Lady Blachington; Mrs. Fanning; Mr. Caddis. Few young men and maids were seen. Dr. John Cormyn came without his wife, not mentioning her. Mrs. Peter Yatt touched the notes for voices at the piano.
On the one hand, we have a live aquatic plant, such as watercress, for instance, or ombrelle d'eau, having at its base a tufty bunch of fine white roots about as thick as a horsehair. In these soft tresses, the caddis worm, which observes a vegetarian diet, will find at one and the same time the wherewithal to build and eat.
Caddis had previously stood eminent as an iceberg of the Lakelands' party. Mr. Inchling and Mr. Caddis were introduced. The former in Commerce, the latter in Politics, their sustaining boast was, the being our stable Englishmen; and at once, with cousinly minds, they fell to chatting upon the nothings agreeably and seriously.
The joists are all arranged crosswise, because this way is the handiest for carrying the sticks and putting them in position; they are fixed by the middle, because the two arms that hold the stick while the spinneret does its work require an equal grasp on either side; each soldering covers a length which is seen to be practically invariable, because it is equal to the width described by the head in bending first to this side and then to that when the silk is emitted; the whole assumes a polygonal shape, not far removed from a rectilinear pentagon, because, between laying one piece and the next, the caddis worm turns by the width of an arc corresponding with the length of a soldering.
A few threads of silk, casually distributed, make the frail combination a trifle more secure. And now to the work of building. Supported by the suspended belt, the caddis worm stretches itself and thrusts out its middle legs, which, being longer than the others, are the grapnels intended to seize things at a distance.
To crown the disorder, the caddis worm adds to the flat spirals any dead shell that comes handy, without distinction of species, provided it be not excessively large. Land shells, swept into the ditches by the rains after the inmate's death, are accepted quite as readily. In short, the caddis worm builds with more or less everything that comes from the plant or the dead mollusk.
The sheath remains vertical, with its hinder orifice level with the water. Soon, an air bubble escapes from the orifice. Deprived of this buoy, the skiff at once goes down. The result is the same with the caddis worms in shell casings. At first, they float, straight up on end, and then dip under and sink, faster than the others, after sending out an air bubble or two through the back window.
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