Thus as supports to the great plateau, or on it, we have the following successive ranges as we proceed from north to south. First, the Sierra de Moncayo and the Idubeda mountains, dividing the basin of the Ebro from that of the Douro; next the Guadarrama chain, with the Sierras de Credos and de Gata, separating the Douro from the Tagus; then the Mountains of Toledo, and the Sierra de San Mamed, between the Tagus and the Guadiana; and lastly, the southern buttress, the Sierra Morena, dividing the Guadiana from the Guadalquiver.
But it is south of the last stream that the culminating points of the whole peninsula are to be found—in the mighty Sierra Nevada, which separates the lovely valley of Granada from the Mediterranean, shielding it from the scorching winds of Africa, and giving it its eternal freshness and verdure. The highest of its summits are Muley Hacen and Velate, lying to the south-east of Granada, the former attaining nearly 11,670 feet, and the latter 11,400. The altitudes diminish rapidly east and west. Towards the east, outlying ranges, such as those of the Sierras de Filabrés and of Gador, attain heights of 6000 and 7000 feet respectively; while in the westward prolongations, the Mesa de Ronda is only 5000; and the chain gradually drops till it reaches the sea at Cape Trafalgar, and the rock of Gibraltar, 1400 feet.
But besides these greater chains of mountains Spain is traversed by numerous offshoots and lateral ranges, and a great portion of her territory is more or less of a mountainous character. In districts where rain is unfrequent these hills are absolutely bare of verdure for a great part of the year, and remain untenanted and uncultivated. Among the more elevated of these lesser chains are those of Monseni, Monserrat, and Montagut, in Catalonia, which attain respectively 5500, 4000, and 3000 feet in height. On the borders of Leon and Galicia, and in the latter province, there are numerous mountains and smaller ranges, which vary from 3000 to 5000 feet. The whole frontier of Portugal is covered by lower ranges, connecting the great chains of which we have already spoken with hills of from 2000 to 3000 feet. From the great eastern buttress two spurs, or rolling plateaux, run down to the Mediterranean, and terminate in the different headlands—such as Cape Gata in the south-east, Cape Palos near Carthagena, Capes de la Nao and San Antonio near Denia, Peniscola, and others. Some of these smaller ranges are exceedingly rich in minerals, and as they approach the sea form sites of picturesque and enchanting beauty, such as can be surpassed only by the better-known and historic glories of the coasts of Italy or of Greece.
Rivers of Spain
Of the five great rivers of Spain only one, the Ebro, pours its waters into the Mediterranean; the other four, the Douro, Tagus, Guadiana, and Guadalquiver, discharge theirs into the Atlantic; but of these last the Guadalquiver alone is wholly a Spanish stream. In the lower and more valuable part of their course the Douro, Tagus, and Gaudiana, belong to Portugal—a fact which must always be remembered when treating of the internal commerce of Spain. But besides these larger streams there are several of slightly smaller dimensions, of which we will treat in order.
Few countries present within so short a distance so great a difference in rainfall and moisture as does Spain. In some parts of the Asturias and Galicia the rainfall is probably as heavy as that of any part of Europe—as much as 147½ inches are said to have been measured in a single year; and the average fall on the northern slopes of the Cantabrian mountains is said to be sixty inches annually. Yet the average of the whole basin of the Ebro—which rises from the southern slopes of the Picos de Europa, one of the most rainy of the rainy districts—is only eighteen inches annually, the last 300 miles of its course being through almost barren districts, where rain seldom falls.
The principal river of Galicia is the Minho, with its tributary the Sil. Each of these rises, though at some distance apart, from the southern side of the Cantabrian mountains, much nearer to the waters of the Bay of Biscay than to those of the Atlantic, into which they flow. They take thence a southerly and south-westerly course, until they unite a few miles above Orense. The lower part of the united course, which bears the name of the Minho, forms from Melgaco to the sea the frontier between the kingdoms of Portugal and Spain. The remaining rivers of Galicia are numerous but of little importance: the Tambre is the largest of those which fall into the Atlantic on the west; while on the north the sources of the Eo and the Navia overlap those of the Minho, and take their rise from the mountains which border on Leon. The whole country is exceedingly well watered. Both in its agricultural character as a grazing country, and in its flora and fauna, it resembles the milder portions of southern Ireland and of Devonshire, but with occasional products of a warmer zone. The rivers of the Asturias, Santander, and of the Basque provinces, all partake of the same general character. In the upper part of their courses they are mere mountain torrents, their course is rapid but short, and they are of but little use for navigation, though occasionally small but insecure harbours are formed at their mouth. The only great exception to this is the Nervion, on which Bilbao is situated, and which is navigable for eight miles from its mouth. The waters of the Bidassoa, the Deva, and others, are, however, utilized for the transport of ore from the mines and ironworks along the course. The Bidassoa, for some ten miles before it enters the Bay of Biscay at Cape Figueras forms the boundary between France and Spain; about four miles from its issue, between Irun and Behobie, is the celebrated Isle des Faisans, where, in 1659, the marriage was arranged between Louis XIV. and the Infanta, which eventually placed the Bourbons on the throne of Spain. The Bidassoa is the last of the northern rivers of Spain which falls into the Atlantic.
The Ebro has its rise from the source, Fontibre, in the province of Santander, and takes a south-easterly course of 466 miles, through the provinces of Santander, Burgos, Navarre, and Aragon, almost parallel with the Pyrenees, till it falls into the Mediterranean, through a sandy delta stretching some fifteen miles into the sea below Amposta. The descent for the first 200 miles of its course is exceedingly rapid, but after that the fall is gradual till it reaches the sea. In its course it receives the waters of many tributaries, both on the left from the Pyrenees, and on the right from the Idubeda mountains and the sierras of Southern Aragon. Were it not for these tributaries little of its waters would reach the Mediterranean, so dry and arid are the Bardenas of Navarre, and the Dehesas of Aragon, through which it flows. The Spaniards have a proverb that