CHAP. 7.—THE NATURE OF THE PALM-TREE. The palm-tree grows in a light and sandy soil, and for the most part of a nitrous quality. It loves the vicinity of flowing water; and as it is its nature to imbibe the whole of the year, there are some who are of opinion that in a year of drought it will receive injury from being manured even, if the manure is not first mixed with running water: this, at least, is the idea entertained by some of the Assyrians. The varieties of the palm are numerous. First of all, there are those which do not exceed the size of a shrub; they are mostly barren, though sometimes they are known to produce fruit; the branches are short, and the tree is well covered with leaves all round. In many places this tree is used as a kind of rough-cast,[783] as it were, to protect the walls of houses against damp. The palms of greater height form whole forests, the trunk of the tree being protected all round by pointed leaves, which are arranged in the form of a comb; these, it must be understood, are wild palms, though sometimes, by some wayward fancy or other, they are known to make their appearance among the cultivated varieties. The other kinds are tall, round, and tapering; and being furnished with dense and projecting knobs or circles in the bark, arranged in regular gradation, they are found easy of ascent by the people in the East; in order to do which, the climber fastens a loop of osier round his body and the trunk, and by this contrivance ascends the tree with astonishing[784] rapidity. All the foliage is at the summit, and the fruit as well; this last being situate, not among the leaves, as is the case with other trees, but hanging in clusters from shoots of its own among the branches, and partaking of the nature both of the grape and the apple. The leaves terminate in a sharp edge, like that of a knife, while the sides are deeply indented—a peculiarity which first gave the idea of a troop of soldiers presenting face on two sides at once; at the present day they are split asunder[785] to form ropes and wythes for fastening, as well as light umbrellas[786] for covering the head.