As the traveller mounts from the coast tract into the more elevated regions, the climate sensibly changes. An hour’s ride from the plains, when they are most sultry, will bring him into a comparatively cool region, where the dashing spray of the glacier streams is borne on the air, and from time to time a breeze that is actually cold comes down from the mountain-tops.[27] Shade is abundant, for the rocks are often perpendicular, and overhand the road in places, while the dense foliage of cedars, or pines, or walnut-trees, forms an equally effectual screen against the sun’s noonday rays. In winter the uplands are, of course, cold. Severe weather prevails in them from November to March;[28] snow falls on all the high ground, while it rains on the coast and in the lowlands; the passes are blocked; and Lebanon and Bargylus replenish the icy stories which the summer’s heat has diminished. The vegetable productions of Phoenicia may be best considered under the several heads of trees, shrubs, herbs, flowers, fruit-trees, and garden vegetables. The chief trees were the palm-tree, the sycamore, the maritime pine, and the plane in the lowlands; in the highlands the cedar, Aleppo pine, oak, walnut, poplar, acacia, shumac, and carob. We have spoken of the former abundance of the palm. At present it is found in comparatively few places, and seldom in any considerable numbers. It grows singly, or in groups of two or three, at various points of the coast from Tripolis to Acre, but is only abundant in a few spots more towards the south, as at Haifa, under Carmel, where “fine date-palms” are numerous in the gardens,[29] and at Jaffa, where travellers remark “a broad belt of two or three miles of date-palms and orange-groves laden with fruit.”[210] The wood was probably not much used as timber except in the earliest times, since Lebanon afforded so many kinds of trees much superior for building purposes. The date-palm was also valued for its fruit, though the produce of the Phoenician groves can never have been of a high quality. The sycamore, or sycamine-fig, is a dark-foliaged tree, with a gnarled stem when it is old;[211] it grows either singly or in clumps, and much more resembles in appearance the English oak than the terebinth does, which has been so often compared to it. The stem is short, and sends forth wide lateral branches forking out in all directions, which renders the tree very easy to climb. It bears a small fig in great abundance, and probably at all seasons, which, however, is “tasteless and woody,”[212] though eaten by the inhabitants. The sycamore is common along the Phoenician lowland, but is a very tender tree and will not grow in the mountains.