Spain, with the neighbouring kingdom of Portugal, constitutes the most westerly of the three southern peninsulas of Europe, and in Cape Tarifa, latitude 36 deg. 1', it attains the most southerly point of the whole continent. Separated from France and from the rest of Europe by the chain of the Pyrenees, and surrounded on all other sides by either the Mediterranean or the Atlantic, it presents at first sight the appearance of an exceedingly compact and homogeneous surface. It seems strange that this well-defined peninsula should contain two separate kingdoms, with peoples who speak languages allied, yet so distinct as to be mutually unintelligible to the uneducated classes. The peninsula lies between latitude 43 deg. 45' and 36 deg. 1' N., and between 3 deg. 20' E. and 9 deg. 32' W. longitude. In shape it is thus nearly a square; a diagonal line from the N.E. Cape Creuz to the S.W. Cape St. Vincent measures 650 miles, while from Cape Ortegal, N.W., to Cape Gata, S.E., would be 525 miles. The whole area of the peninsula contains 219,200 square miles, of which 36,500 on the west belong to Portugal, and 182,700 to Spain. The peninsular form of the country would lead us to expect that it would partake of all the characteristics of a maritime climate; but such is not the case. From the comparative evenness of the coast-line, unbroken and unindented by any deep inlets except on the extreme north-west, in Galicia, the coast-line bears a less proportion to the whole surface than that of many lands less surrounded by the sea. It counts only 1300 miles, 700 of which are washed by the Mediterranean, and 600 by the Atlantic; that is, 1 mile of coast-line to 134 square miles of area; while Italy contains 1 to 75, and Greece 1 to 7. From the configuration of the coast, and from the character of the great central plateau, a large part of Spain has really an extreme continental climate. For while it is distinctly separated from the rest of Europe by the line of the Pyrenees, Spain is no less distinctly divided into different districts in the interior--districts which differ most widely in climate and elevation and products. Six of these are usually named: (1) The N.W. Atlantic coast, comprising Galicia, the coast of which presents a continuation of the Fiord system of Norway, and of the Firths of Scotland and Ireland; (2), the northern slope of the Cantabrian Mountains, and the narrow slip of land contained between them and the Bay of Biscay, comprising the Asturias, Santander, and the Basque Provinces; (3) the Valley of the Ebro, with Navarre, Aragon, and Catalonia; (4) the great Central Plateau--Leon, Old and New Castile, Estremadura, and La Mancha; (5) the Mediterranean Provinces, including Valencia, Murcia, and the parts of Andalusia between the Sierra Nevada and the Mediterranean; (6) the rest of Andalusia sloping towards the Atlantic. We will treat of these in order. _Mountain Chains._