Avenzoar, born in 1113, of a Spanish family which had many illustrious scions, was instructed in medicine by his father, and ultimately achieved great celebrity throughout Spain and Africa; for a time he lived at the court of the Prince of Seville, loaded with honors and presents, and finally was made Vizier. Among other works he wrote a treatise on renal diseases, in which he outlined the treatment of calculus and described an operation therefor. He died in 1161.
Averroës (as he is generally known, though his Arabic name was Aben Roschd) was born A.D. 1166, in Cordova, where his father held official position. After being grounded in philosophy, mathematics, and other sciences he became a pupil in medicine under Avenzoar. The greater part of his life wras passed in Seville, where he was greatly esteemed and finally knighted. In 1195 he was called to the court of the King of Spain and Morocco, in Cordova, where he received the highest honors, only, however, through some misunderstanding, to be disgraced; but he soon afterward recovered his former position and dignities. He wrote extensively not only on medicine, but on philosophy, his writings taking throughout a more or less dialectic character. He died in 1198, and from him descended a number of physicians who achieved more or less reputation.
Maimonides was born in Cordova, A.D. 1135. He early devoted himself to the Talmud, and in his extended travels visited Jerusalem; he even founded a school of philosophy in the East, which, however, had only a brief existence. He died in 1204. He ranked higher in philosophy than in medical art, and seems to have been imbued with the methods of his teacher, Averroës, and is generally regarded as a theorist rather than as a practical physician, although he wrote more or less on medical topics, and is particularly remembered for an essay upon poisons. He was about the last of the Arabians who deserves special mention.
During the period which was nearing its close at the time of the death of Maimonides, the Arabs embraced with much ardor the study of medicine, and translated into their language nearly all the treasures that had been amassed by the Greeks; indeed, the preservation of many of the great writings which would otherwise have been lost is due solely to this fact. Strange to say, however, the Arabians neglected Latin authors, and apparently possessed no knowledge of Celsus or Coelius Aurelianus. As religious prejudices prohibited dissections, they were obliged to rely solely upon the anatomical descriptions of Galen, and succeeded in increasing the errors of the original by inaccurate translations. So far as originality of observation goes, the Arabians were in most respects behind the Greeks; nevertheless, they were the first to differentiate eruptive fevers, to which the latter paid little or no attention. The Arabian school also supplied the knowledge of purgatives, such as cassia and manna, which replaced the drastics employed by the ancients; also the mode of preparation of syrups, tinctures, distilled waters, pomades, and plasters.
While the Arabians were gradually rising by their power, intelligence, and renown, the Greeks were declining in inverse ratio; the genius, courage, and ancient virtues of the latter grew weaker and weaker, until they seemed on the verge of extinction. In the medical history of these centuries, in all Europe not under Moslem rule, there was but one man entitled to mention as an author in medicine,—viz., John Actuarius, the son of one Zacharia. He lived at the close of the thirteenth and the beginning of the fourteenth century; was employed at Constantinople, his surname being the honorary title of the court-physicians. He is more commonly known as Zacharia. Of his life we know little, save that he wrote several volumes, for the most part abridgments or commentaries on the doctrine of Galen. He laid great stress on the theory of critical days, and sustained his views by astronomical hypotheses most ingeniously combined. His was the first Greek work in which were mentioned the remedies introduced by the Arabians, yet he has not a word to say of variola, measles, spina ventosa, and other affections fully described by Arabic authors. He held remarkable views concerning the nature of man, whom he supposed to be formed by the union of two contrary substances,—the soul and the body; described somewhat elaborately an imaginary plexus of veins connected with the digestive organs, through which the animal spirits were elaborated and purified; also, and quite methodically, for his age, he explained the functions of the animal economy and the etiology of disease.
While the clouds that befogged the study of medicine in the Empire of the East thus grew heavier and heavier, we must not be blind to the melancholy spectacle concerning the provinces composing the Empire of the West. Barbarians in swarms, from the forests of Germany and Scandinavia, had swept its various portions, pillaging, destroying, and reducing to slavery its inhabitants. In southern Europe everything was changed. Each generation witnessed some new and unheard-of invader, who demanded his share of booty and renown and left a track of desolation behind him. There was a brief period of order when Charlemagne reunited under one dominion these divers races and seemed to have resuscitated the Western Empire; but no sooner was he dead than its elements, being devoid of affinity, broke apart. Former vassals, no longer restrained by the firm hand of the emperor, made common warfare against his successors and against each other, and for several ages there was nothing but a succession of wars and invasions. Feudalism gave some sort of character to this military anarchy by affording repose and, in a measure, security for those who had hitherto been trampled under foot; but learning and the sciences fell into complete neglect, and it was with great difficulty that a very small number of men found within the pale of the church a limited protection that enabled them to devote themselves to the study of medicine and ecclesiastical law. Near the end of the eleventh century, however, the enthusiasm of the crusades whetted anew the turbulent appetite of the Christian barons, and led these lords of western Europe, with their belligerent spirits, to the East, as a result of which people hitherto oppressed could breathe more freely. A few States recovered their independence; some semblance of law was established; municipal institutions were organized, and establishments consecrated to public use were founded and multiplied; finally, in the course of the thirteenth and fourteenth centuries, the cloud which covered the face of Roman Catholic Europe was in some measure dispersed, and men of talent and even genius began to appear upon the scene; everything about them being so obscure, they shone like stars in the firmament. In letters, for instance, there were Dante, Petrarch, Boccaccio; in mathematics, Leonard, of Pisa, the first in Europe to understand and employ figures and algebraic characters, although Cuvier has claimed this distinction for Gerbert, a Benedictine monk of the tenth century, who subsequently became Pope Sylvester II. At this time, although in scholastic estimation medicine, theology, and philosophy alone were fit to entertain the human mind, the natural sciences were not without occasional representatives. Roger Bacon was three centuries in advance of scientific reform, and endeavored to introduce experimental philosophy, and so fully convinced some of his auditors that they subscribed £2000 sterling to provide for the expense of his experiments; this was money most happily employed, since it made possible a number of important discoveries. It is said that Bacon knew the properties of convex and concave lenses, and was the first to conceive of the microscope and telescope; his astronomical knowledge led him to demand a reform in the calendar, which Gregory XIII carried out three centuries later; he had knowledge of gunpowder and its effects, and was, in fact, the wizard of his day; but his boldness and originality drew upon him the enmity of the church, by which he was persecuted and finally condemned to imprisonment for life upon a diet of bread and water, although he was ultimately released, in 1266, by Pope Clement IV. He wrote extensively, but only fragments of his works exist, since the friars believed them tainted with witchcraft and prevented their publication.
Before and during the time of Roger Bacon the philosophers were divided into two parties, which engaged in very unseemly and unphilosophic strife. One was termed the Realist, and believed, with Plato, that ideas are self-existent and independent of the mind,—in other words, veritable entities; the other, the Nominalist, held, with Aristotle, that general ideas are pure abstractions formed by the mind with the aid of sensations received from without, without which they could never exist,—that is, if a being could be imagined without sensibilities and the power of sensation, such being would be destitute of ideas. These two parties kept up a very active warfare, and enlisted the aid of both civil and ecclesiastical authorities, the result being persecution of each other, and that general unsatisfactory conflict into which theology and metaphysical speculation always force those who indulge in them.
Now, regarding the condition of medical affairs in the Empire of the West: Down to the seventh century, in Rome, there were court-archiaters who were attached to the retinues of the nobles, and in each large city popular archiaters formed a college charged with sanitary matters, the instruction and examination of candidates, and gratuitous services to the poor. Although there is little definite information available, it is probable that after the ruin of Alexandria much the same medical organization obtained in those provinces as continued under the Greek Empire at Constantinople. Under Arab sway we know very little of what rules or regulations governed instruction in medicine and its practice; and, so soon as one of these countries fell under the rule of the Turks, all scientific institutions seem to have decayed or been discontinued,—or, as Renouard states it: "If we may judge by what still exists to-day in this unfortunate country (Turkey), consumed by the power of ignorance and despotism, the most complete anarchy followed all older organizations."
In southern Europe, however, things had not gone on quite so badly, although at first barbarous invasion caused everywhere disorder and confusion, and the Christian States of the Western Empire yet presented after three or four centuries a chaotic condition of affairs. The ecclesiastical schools, which were under the care of the church, still pursued courses of literary and scientific instruction; in the time of Charlemagne, for instance, the colleges of the cathedrals, and even some of the monasteries, taught medicine in a very limited way under the name of physics. Thus all the liberal professions—that of medicine included—fell under the domination of the clergy, and priests, abbots, and bishops became court-physicians. The monks of Mount Cassin, of the order of St. Benoit, enjoyed for a long time a great reputation for medical skill; and among these in the tenth century was an abbot named Berthier Didier, who became Pope Victor III toward the close of the eleventh century, and one Constantine, surnamed the African. Of the ecclesiastics who from the ninth to the eleventh century were distinguished by the knowledge of medicine, there were Hugues, abbot of St. Denis, physician to the King of France; Didon, abbot of Sens; Sigoal, abbot of Epernay; Archbishop Milo, etc. Even several religious orders of women undertook, to a certain extent, the practice of medicine, and Hildegarde, who was abbess of the convent of Rupertsburg, near Bingen, is credited with having written a treatise on Materia Medica.
From the ninth to the thirteenth century the Jews shared with the clergy the monopoly of the healing art. Many of these studied under Arabian physicians, and, though the canons of the church forbade them to in any way minister to the ailments of Christians, they were still called upon in time of need, and even in many instances had access to the palaces of archbishops, cardinals, and popes.