That last sentence sums up an ever-present and essential factor. In any description of this country, however superficial, this Oriental heritage must always be borne in mind as an influence of first importance. Previous to the Arab inrush, Spain had enjoyed practically no organic national existence. The Peninsula was occupied by a cluster of separate kingdoms, not united nor even homogeneous, and usually one or another at war with its neighbour. Neither Roman nor Goth had fused the Spanish races into a concrete whole during their eight centuries of overlordship. In A.D. 711 occurred a decisive day. Then, on Guadalete's plain, below the walls of Jerez, that impetuous Arab chieftain Tarik overthrew the Gothic King Roderick and with him the power of Spain. Like an overwhelming flood, the Arabs swept across the land. Within two years (by 713) the insignia of the Crescent floated above every castle and tower, and Moslem rule was absolute throughout the country--excepting only in the wild northern mountains of Asturias, whence the tenacity of the mountaineers, guided by the genius of Pelayo, flung back the tide of war. [Illustration: TYPES OF SPANISH BIRD-LIFE WOODCHAT SHRIKE (_Lanius pomeranus_)] Spanish history for the next seven centuries (711-1492) records "Moorish domination." Now history, as such, lies outside our scope; but we become concerned where Arab systems, and their methods of colonisation, have altered the face of the earth and left enduring marks on wilder Spain. And we may, beyond that, be allowed to interpolate a remark or two in elucidation of what sometimes appear popular misconceptions on these and subsequent events. Thus, during the period denominated "domination," the Arab conquerors enjoyed no peaceful or undisputed possession. During all those centuries there continued one long succession of wars--intermittent attempts, successful and the reverse, at reconquest by the Christian power. Here a patch of ground, a city, or a province was regained; presently, perhaps, to be lost a second or a third time. Never for long was there a final acceptance of the major force. But during the interludes, the periods of rest between struggles, the two contending races lived in more or less friendly intercourse, exchanging courtesies and even maintaining a stout rivalry in those warlike forms of sport which in mediæval times formed but a substitute for war. It was thence that the custom of bull-fighting took its rise. If not fighting Arabs, fight bulls, and so prepare for the more strenuous contest. Such conditions could not but have tended towards greater coherence among the various elements on the Christian side, except for the incessant internecine rivalries between the Christians themselves. A Spanish knight or kinglet would invoke the aid of his nation's foe to consolidate or establish his own petty estate. Christians with Moslem auxiliaries fought Moslems reinforced by Christian renegades.