That red capsicum is the foot of the animal contained in the cockle-shell. By its aid it crawls, leaps, and burrows in the sand, where it lies drinking in the salt water through one of its siphons and discharging it again through the other. Put the shell into a rock pool, or a basin of water, and you will see the siphons clearly. But I suppose your eyes will be rather attracted by that scarlet and orange foot which is being drawn in and thrust out to a length of nearly four inches, striking with its point against any opposing object, and sending the whole shell backward with a jerk. The point, you see, is sharp and tongue-like, only flattened, not horizontally, like a tongue, but perpendicularly, so as to form, as it was intended, a perfect sand-plow, by which the animal can move at will either above or below the surface of the sand. Enough of Cardium tuberculatum. Now for the other animals of the heap; and first, for those long, white razors. They, as well as the gray cimeters, are solens, razor-fish (Solen siliqua and S. ensis), burrowers in the sand by that foot which protrudes from one end, nimble in escaping from the Torquay boys, whom you will see boring for them with a long iron screw on the sands at low tide. They are very good to eat, these razor-fish; at least for those who so think them; and abound in millions upon all our sandy shores. Now for the tapering brown spires. They are Turritellæ, snail-like animals (though the form of the shell is different), who crawl and browze by thousands on the beds of Zostera, or grass wrack, which you see thrown about on the beach, and which grows naturally in two or three fathoms of water. Stay: here is one which is “more than itself.” On its back is mounted a cluster of barnacles (Balanus Porcatus), of the same family as those which stud the tide-rocks in millions, scratching the legs of hapless bathers. Look at the mouth of the shell; a long gray worm protrudes from it, which is not the rightful inhabitant. He is dead long since, and his place has been occupied by one Sipunculus Bernhardi, a wight of low degree who connects “radiate” with annulate forms--in plain English, sea-cucumbers with sea-worms. But however low in the scale of comparative anatomy, he has wit enough to take care of himself; mean, ugly, little worm as he seems. For, finding the mouth of the Turritella too big for him, he has plastered it up with sand and mud (Heaven alone knows how), just as a wry-neck plasters up a hole in an apple tree when she intends to build therein, and has left only a round hole, out of which he can poke his proboscis. A curious thing is this proboscis, when seen through the magnifier. You perceive a ring of tentacles round the mouth, for picking up I know not what; and you will perceive, too, if you watch it, that when he draws it in, he turns mouth, tentacles, and all inward, and so down into his stomach, just as if you were to turn the finger of a glove inward