A most graceful and delicate tangle is to be found on the south and east coasts of England, all round Scotland, and at Bantry Bay, Howth, Balbriggan, and Kingston, in Ireland, on rocks and stones in pools left by the tide. When fresh, it is a clear brown-olive in color, and it changes to green when dry or when placed in fresh water. The leaf comes from a stalked root, tapers to the end, is frilled at the sides, and may be from six inches to three or more feet in length, and from one to six inches broad. It is thin, but is traversed by a double layer of large air-cells. There is a large tangle which goes by the name of furbelows; and when spread out on the shore may make a circle of fronds twelve feet in diameter. It is a clear brown-olive in color, and the root gives rise to a stem with large hollow knobs on it. The leaf is oblong, and is deeply split into many parts. The plant grows on rocks at low-water mark, and is abundant. But the commonest of all these tangles, with its long stem and branching roots, and beautiful, slippery, crumpled leaf, forms a belt, about low-water mark, round rocky shores, where its long, ribbon-like fronds wave gracefully in the water. When it is in deeper water it is much larger, and is then called the broad-leaved tangle. The great tangles which are employed to form kelp are not shore plants, but live covered with water. The gems of the seashore are, however, not the olive and green weeds, but the red kinds, and they abound. There is a very large and handsome one, which is rare in deep, shady pools at extreme low-water mark, but which is often washed up in storms, about the southwest coast of England, Bantry Bay, Antrim, Down, and Orkney. It is somewhat kidney-shaped, in the outlines of the large blood-red fronds, and has a stout, round stem. It is made up of three layers, and some plants are male, and others are female. This plant is called Kalymenia, from the Greek words that mean beautiful and membrane. Another kind of the Kalymenia, found at Falmouth, Plymouth, and Bantry Bay, is something like a short, broad tangle with crisped leaves in shape. It is red, and the root is a disk, and the fronds are about a foot in length. It is found on rocks and stones, within tide-marks, in land-locked bays. It is very thin and delicate, and may be compared with a totally different-feeling red sea-weed, which has flat fronds of irregular shape, fringed with little leaflets, the whole being half-gristly to the touch, and of a dull purplish color. It is common on the shores of the south and west of Ireland and Jersey. The root is very fibrous, and altogether it is a most peculiar weed. There is another of these leathery weeds which grows to some size, and has well-grown leaflets on its edges, besides large circular markings on its purple surface, which is pretty common everywhere. They belong to the genus Rhodymenia, so called from the Greek words red and membrane.