This spirit of antagonism was strengthened upon their conversion to Christianity, and everything that savored of paganism in art or literature was severely proscribed. For the heathen forms, whose only aim and object was beauty, were substituted religious symbols, the cross and other implements of the passion, the lily, the fish, the aureole, etc., whose object was to recall to the faithful the mysteries of religion. Gradually, however, as the artistic feelings of the new people became awakened, principles of beauty commenced to be regarded, and, while symbolism remained an important feature of European art until the period of the Renaissance, and even then was not entirely superseded, magnificent artistic results were obtained. 1. _Byzantine Art._--The principal of the early mediæval art developments was the Byzantine. It flourished principally in the eastern part of Europe. In the west it was known, with a few variations, as the Lombard and the Norman. All three are often included under the term Romanesque. Byzantine art was essentially Christian in its spirit and motives. It used religious symbols extensively, but incorporated in its ornament a few pagan elements, such as the acanthus and the scroll. Natural forms were always conventionally treated. Its coloring was rich and gorgeous. The principal features of its architecture were the dome and round arch. The plan of the churches was often in the form of a Greek or Latin cross, with the dome placed over the intersection of the two arms. The church of St. Sophia, in Constantinople, is the most magnificent example of Byzantine architecture and ornament. Although now a Mohammedan mosque, it is, probably, in the motive and spirit that actuated its construction, the most Christian building in the world. 2. _Saracenic Art._--Developed from the Byzantine by the Moors and the Saracens. It differs from it, however, in one important respect. While the Byzantine makes use of numerous conventionalized plant and animal forms, the Saracens and Moors were forbidden by their religion, the Mohammedan, to copy in any manner the form of any living thing, animal or vegetable. They were thus limited entirely to geometric forms, which, however, often fall insensibly into flower and leaf forms. Interlacing bands and curves of intricate pattern, and exhibiting the peculiar Moorish curve, are very characteristic of Saracenic ornament. Inscriptions were frequently interwoven in this tracery. The coloring was gorgeous, consisting principally of blue, red, and gold. The principal arches used were the pointed and the horseshoe arch. The Alhambra Palace in Spain is the most famous example of Saracenic ornament and architecture. 3. _Gothic Art._--Gothic art grew out of the Byzantine, all the symbolic elements being retained. It is divided into many different varieties.