THE AGE OF RENOVATION. This Age of Renovation (extending from the commencement of the fifteenth century to the present time, according to Renouard's classification) is divided into the Erudite Period, comprising the fifteenth and sixteenth centuries, and the Reform Period, comprising the seventeenth and eighteenth centuries, and one should add, in fact, the nineteenth. In general literature this age is known as that of the Renaissance, and is one of whose beginning a great deal has been written, and so much better than I can put it in this brief work, that to general sources I should perhaps refer those who are interested in knowing how and why there came about such a tremendous{099} change in methods and habits of thought and in acquirement of knowledge. But it is the history of medicine that at this time we particularly desire, and our minds must be, in some slight degree, prepared for the great changes to be recounted by some, with the conditions which brought about this revolution. It was truly an awakening in every department of knowledge and along every line of study; it was as if the minds of men had been dormant and lost their power of receptivity, and, after a long period of torpor, awakened in a new atmosphere amid new surroundings; as if there had burst upon them a sudden appreciation of ability to do things hitherto undreamed of, and to acquire knowledge such as hitherto had been possessed by none. Once free from the shackles imposed by authority of the past, these minds severed their Gothic bonds, and started forth in every direction with the ardor of youth and the interest of novelty, all engaging in the general enterprise of erecting from the _débris_ of antique science a new temple to the mind in which to worship. While some delved among the records of the past, others sought to bind the past and present, and others, bolder yet, cut entirely loose from it, rejected all tradition, and would fain have built this temple with entirely new materials.