Age of Transition (continued).—Arabic Period: A.D. 640-1400. Alkindus, 873. Mesue, 777-857. Rhazes, 850-932. Haly-Abas, 994. Avicenna, 980-1037. Albucassis, 1122. Avenzoar, 1113-1161. Averroës, 11661198. Maimonides, 1135-1204. School of Salernum: Constantinus Afri-canus, 1018-1085. Roger of Salerno, 1210. Roland of Parma, 1250. The Four Masters, 1270 (?). John of Procida.

The Arabic Period, which began with the second destruction of the Alexandrian Library—640 A.D.—ends with the fourteenth century. At the commencement of this period the Roman Empire of the West scarcely existed: the magnificent territory which composed it had been overrun and subdued by barbarous tribes from the forests of the North, while from its ruins had risen several independent kingdoms,—that of the Franks in Gallia, of the Visigoths in Spain, and of the Lombards in Italy. The last of the Western emperors of note was Justinian, whose army and generals—especially the genius and heroic devotion of Belisarius—threw some glory upon Italy, Sicily, Africa, and Spain. Meantime the Empire of the East, surrounded by enemies, and harassed from all directions, still sustained itself with vigor. The Turks had begun to show themselves on the banks of the Danube; those eternal enemies of Rome—the Persians—made incessant war; and a new and terrible enemy had sprung up in the deserts of Arabia. Then came one who was at the same time legislator, prophet, and conqueror, and united under one faith and one leader tribes hitherto divided and warring against each other. Thus arose a powerful and enthusiastic nation, animated by thirst for conquest and ardor for proselytism. In less than a century after the first preaching of Mahomet, all of Arabia, India, Syria, and Egypt were in the hands of his followers. In the year 640 Amrou effected the conquest of Egypt, seized Alexandria, and the great library of five hundred thousand volumes was, by order of Omar (successor to Mahomet), delivered over to the flames; and the historian Abulpharagius declares that these books served for six months to heat the public baths, four thousand in number. Such were the first fruits of the establishment of Islam. * Happily, zeal of proselytism somewhat abated among the Mussulman princes, and religious fervor gave place to policy; so that the later Arabian caliphs showed themselves, in general, the protectors of the arts and sciences. Some, indeed, endeavored to collect the débris of the scattered treasures that had been so fortunate as to escape the ignorant fanaticism of their predecessors; and others, more tolerant even than the Christian princes of the time, received without distinction all men of merit who took refuge in their State, gave them employment, and recompensed them for their services. On this account philosophers and persecuted "heretics" sought an asylum among infidels, and found there the protection which Christianity did not afford,—in return for which they gave their protectors the benefits of Greek civilization.

* See a very vigorous denial of this historical statement in
The Nineteenth Century, October, 1894, page 555.

Of all the Moslem rulers, the most distinguished for love of learning and general enlightenment was Haroun-al-Raschid, the Charlemagne of the East, contemporary and emulator of the glory of the emperor of the Franks, the hero of a hundred Arabic poems, whose dominion extended from the borders of the Indus to the heart of the Spanish peninsula. He embellished Bagdad, his capital, with schools and hospitals. His son Almamon founded the Academy of Bagdad, which became the most celebrated of the age; likewise spared no pains to draw to his court the most illustrious men of all countries. He enjoined each of his ambassadors to purchase all the writings of the philosophers and physicians that could be found, and these he required to be translated into Arabic; his interpreter, Honain, a Christian, was employed at translating for forty-five years, and received, for each book rendered into Arabic, literally its weight in gold.

The eclat which the Moorish caliphs shed upon Spain from the tenth to the thirteenth century is well known. The cities of Cordova, Toledo, Seville, and Murcia possessed public libraries and academies, and students from all parts of Europe flocked to them to be instructed in arts and sciences; the library of Cordova alone embraced more than two hundred and twenty-four thousand volumes. Thus it will be seen that the dominion of mental and temporal affairs passed from the Greeks and Romans to the Saracens.

Arabian medicine constitutes one of the most interesting chapters in the history of our art. An offspring from Greek schools, it was for nearly one hundred years the fostermother of that art, and, although it gave rise to no great discovery nor wonderful step in advance during all this period, it nevertheless kept alive all the learning of the past, and clarified rather than made it turbid. In the sixth century the Nestorians (followers of Bishop Nestor), having been driven out of Syria, settled in Persia, Mesopotamia, and Arabia, and there founded schools and other institutions such as they had had at home,—schools in which, beside the ordinary philosophic studies, medicine received a share of attention. Thus it came about that by the seventh century Arabian physicians were everywhere known and in high repute. Naturally the basis for their studies embodied the writings of Hippocrates, Galen, Oribasius, and Paul of Ægina; and the first Arabian works consisted solely of translations from the Greek, first out of their Syriac rendering, and later from the originals. Indeed, so much eminence was finally achieved by Arabian physicians that more than four hundred are known by name as authors.

The first author deserving of mention was Bachtischua, of Nestorian stock, celebrated in Jondisapur, director of the medical school, and later physician to Caliph El-Mansur, in Bagdad. Of his descendants several became well known in the same field.

Alkindus—this being the Latin arrangement of his Arabic name—came from a Persian family, who lived first in Basara and later at the court of the caliphs El-Monon and El-Motasin, in Bagdad. He enjoyed a very high reputation as physician, philosopher, astronomer, and mathematician, and died A.D. 873. Mesue, the first of his name, sometimes known as Janus Damascenus, was director of the hospital in Bagdad and physician to Haroun-al-Raschid. He was born in 777, wrote extensively (since at least forty of his works have been catalogued), and died in 857 in Samarra.

Serapion the elder, also sometimes known as Janus Damascenus, and whose Arabic name was Serafiun, was born in Damascus—the exact data is not known—and died some time prior to A.D. 930. He was author of two volumes of aphorisms concerning the practice of medicine, which had at his time the greatest repute.

The most celebrated of the early Arabian physicians was Rhazes, born in the Persian province of Khorassan A.D. 850. According to the historians of his nation he was a universal genius, equally famous in music, astronomy, mathematics, chemistry, and medicine; he was surnamed "The Experienced." At the age of fifty he was one of the most distinguished professors in the Academy of Bagdad, where students came from great distances to listen to him. Chosen from among a hundred colleagues to direct the grand hospital of that city, he displayed indefatigable zeal and most scholarly learning, even to his old age and in spite of loss of sight, which overtook him at the age of eighty, when his reputation was at its height. Two years after this misfortune—i.e., in 932—he died. His generosity, which was proverbial, and his compassion for the poor left him penniless at the time of his death. Some two hundred and thirty-seven monographs of his have been catalogued, though the greater number of his works are practically lost. Two treatises on medicine remain which afford excellent counsel in many respects; among other matters he advises:—