of the middle ages, appeared in 1834, I proceeded to finish my task; but failing in the accomplishment of certain arrangements connected with its publication, I laid aside my translation for the time under a hope, which has at length been fulfilled, that at some future more auspicious moment, it might yet see the light.
It must not be supposed that the author, in thus taking up the history of three of the most important epidemics of the middle ages, although he has illustrated them by less detailed notices of several others, considers that he has exhausted his subject; on the contrary, it is his belief, that, in order to come at the secret springs of these general morbific influences, a most minute as well as a most extended survey of them, such as can be made only by the united efforts of many, is required. He would seem to aim at collecting together such a number of facts from the medical history of all countries and of all ages, as may at length enable us to deal with epidemics in the same way as Louis has dealt with individual diseases; and thus by a numerical arrangement of data, together with a just consideration of their relative value, to arrive at the discovery of general laws. The present work, therefore, is but one stone of an edifice, for the construction of which he invites medical men in all parts of the world to furnish materials1.
Whether the information which could be collected even by the most diligent and extensive research would prove sufficiently copious and accurate to enable us to pursue this method with complete success, may be a matter of doubt; but it is at least probable, that many valuable facts, now buried in oblivion, would thus be brought to light; and the incidental results, as often occurs in the pursuit of science, might prove as serviceable as those which were the direct object of discovery. Of what immense importance, for instance, in the fourteenth century, would a general knowledge have been of the simple but universal circumstance, that in all severe epidemics, from the time of Thucydides2 to the present day, a false suspicion has been entertained by the vulgar, that the springs or provisions have been poisoned, or the air infected by some supposed enemies to the common weal. How many thousands of innocent lives would thus have been spared, which were barbarously sacrificed under this absurd notion?
Whether Hecker’s call for aid in his undertaking has, in any instance, been answered by the physicians of Germany, I know not; but he will be as much pleased to learn, as I am to inform him, that it was the perusal of the “Black Death” which suggested to Dr. Simpson of Edinburgh the idea of collecting materials for a history of the Leprosy, as it existed in Great Britain during the middle ages; and that this author’s very learned and interesting antiquarian researches on that subject, as published in the Edinburgh Medical and Surgical Journal, have been the valuable, and, I trust, will not prove the solitary result.
As the three treatises, now comprised for the first time under the title of “The Epidemics of the Middle Ages,” came out at different periods, I have thought it best to prefix to each the original preface of the author; and to the two which have already been published in English, that of the translator also; while Hecker’s Address to the Physicians of Germany, although written before the publication of the “Englische Schweiss,” forms an appropriate substitute for an author’s general preface to the whole volume.
At the end of the “Black Death,” I had originally given, as No. III. of the Appendix, some copious extracts from Caius’ “Boke or Counseill against the Disease commonly called the Sweate or Sweatyng Sicknesse;” but this little treatise is so characteristic of the times in which it was written, so curious, so short, and so very scarce3, that I have thought it worth while, with the permission of the council of our Society, to reprint it entire, and to add it in its more appropriate place, as an Appendix to the Sweating Sickness.
ADDRESS
TO THE
PHYSICIANS OF GERMANY.
It has long been my earnest desire to address my honoured colleagues, especially those with whom I feel myself connected by congeniality of sentiment, in order to impress on them a subject in which science is deeply interested, and which, according to the direct evidence of Nature herself, is one of the most exalted and important that can be submitted to the researches of the learned. I allude to the investigation of Epidemic Diseases, on a scale commensurate with the extent of our exertions in other departments, and worthy of the age in which we live. It is, with justice, required of medical men, since their sole business is with life, that they should regard it in a right point of view. They are expected to have a perception of life, as it exists individually and collectively: in the former, to bear in mind the general system of creation; in the latter, to demonstrate the connexion and signification of the individual phenomena,—to discern the one by the aid of the other, and thus to penetrate, with becoming reverence, into the sanctuary of cosmical and microcosmical science. This expectation is not extravagant, and the truth of the principles which the medical explorer of nature deduces from it, is so obvious, that it seems scarcely possible that any doubts should be entertained on the subject.
Yet we may ask, Has medical science as it exists in our days, with all the splendour which surrounds it, with all the perfection of which it boasts, satisfied this demand? This question we are obliged to answer in the negative.
Let us consider only the doctrine of diseases, which has been cultivated since the commencement of scientific study. It has grown up amid the illumination of knowledge and the gloom of ignorance; it has been nurtured by the storms of centuries; its monuments of ancient and modern times cannot be numbered, and it speaks clearly to the initiated, in the languages of all civilized nations. Yet, hitherto, it has given an account only of individual diseases, so far as the human mind can discern their nature. In this it has succeeded admirably, and its success becomes every year greater and more extensive.
But if we extend our inquiries to the diseases of nations, and of the whole human race, science is mute; as if it were not her province to take cognizance of them, and shows us only an immeasurable and unexplored country, which many suppose to be merely a barren desert, because no one to whose voice they are wont to listen, gives any information respecting it. Small is the number of those who have traversed it; often have they arrested their steps, filled with admiration at striking phenomena; have beheld inexhaustible mines waiting only for the hand of the labourer, and, from contemplating the development of collective organic life, which science nowhere else displays to them on so magnificent a scale, have experienced all the sacred joy of the naturalist to whom a higher source of knowledge has been opened. Yet could they not make themselves heard in the noisy tumult of the markets, and still less answer the innumerable questions directed to them by many, as from one mouth, not indeed to inquire after the truth, but to obtain a confirmation of an anciently received opinion, which originated in the fifth century before our era.
Hence it is, that the doctrine of epidemics, surrounded by the other flourishing branches of medicine, remains alone unfruitful—we might almost say stunted in its growth. For, to the weighty opinions of Hippocrates, to the doctrines of Fracastoro which contain the experience of the much-tried Middle Ages, and lastly to the observations of Sydenham, only trifling and isolated facts have been added. Beyond these facts there exist, even up to the present times, only assumptions, which might, long since, have been reduced to their original nothingness, had that serious spirit of inquiry prevailed which comprehends space and penetrates ages.
No epidemic ever prevailed during which the need of more accurate information was not felt, and during which the wish of the learned was not loudly expressed, to become acquainted with the secret springs of such stupendous engines of destruction. Was the disease of a new character?—the spirit of inquiry was roused among physicians; nor were the most eminent of them ever deficient either in courage or in zeal for investigation. When the glandular plague first made its appearance as an universal epidemic, whilst the more pusillanimous, haunted by visionary fears, shut themselves up in their closets, some physicians at Constantinople, astonished at the phenomenon, opened the boils of the deceased. The like