Part 74

Besides the general schemes which we have mentioned, Count Rumford was engaged, during his residence in Bavaria, in many minor plans of social improvement; indeed, as we have already said, he acted the part of surveyor-general of the abuses of the electorate. It was not in the nature of things that he should be able to proceed in his various innovations and reforms without provoking some jealousy and opposition among the Bavarian nobles: the support and favor, however, of the elector never failed him, and with the people at large he was exceedingly popular. In the year 1794, finding his health greatly impaired by his close attention to business, he obtained leave of absence from the elector, and employed sixteen months in traveling through various parts of the continent, especially Italy. During his absence, two very gratifying testimonies of respect and gratitude were borne to him by the Bavarians. The first was, the erection of a monument to commemorate his public services. The other was still more honorable to him: it was the resolution, already referred to, of the inmates of the Military Workhouse, when they heard that he was dangerously ill at Naples, to set apart an hour every evening to pray for his recovery. In 1795 Rumford returned to Bavaria, but left it almost immediately, to proceed on a visit to England. Here he was received with all distinction, and his opinion and advice were asked by all engaged in philanthropic schemes. To save himself the labor thus entailed upon him, he resolved to publish an account of his doings and experiments in Bavaria, and accordingly prepared for the press the two volumes of essays which go by his name. The only subject of general interest in these essays, apart from the purely scientific disquisitions, which remains to be mentioned by us, is that of _fuel_.

In undertaking to reform chimneys and fireplaces, Count Rumford had three objects in view――the saving of fuel, the prevention of smoke, and the avoidance of the injury to health arising from drafts. The extent of his services in this unpretending but most important department will be better estimated if we consider the state of fireplaces in most European countries fifty or sixty years ago. ‘The most polished nations of antiquity,’ says Dr. Renwick, ‘had no other means of providing for the issue of the smoke of their fires than by leaving openings in the roof. They indeed appear, in some instances, to have heated apartments by flues circulating beneath the floors, which must have terminated in a vertical funnel, thus forming an approximation to the chimney; but there appears to be no instance of the arrangement of an open hearth and vertical flue until late in the middle ages. Chimneys and fireplaces of the latter date are still to be seen in the kitchens and halls of baronial mansions; but the hearths were of great size, the arched openings wide and lofty, insomuch that they could be entered by persons standing upright, and admitted seats to be placed on each side of the fire. The latter, indeed, were the only places where the warmth of the fire could be enjoyed without exposure to the currents of cold air continually rushing in to join the ascending column in the chimney. Even when an increasing scarcity of fuel compelled less extravagant modes of applying it to be sought, the arched opening remained of a large size, the fireplace of a depth equal in extent to its front, and the walls were carried back perpendicularly to the latter. In England, where coal had come into almost universal use as a fuel, the grates in which it was burnt were almost exact cubes, and were lined with cast-iron on the sides and back. The evils of these fire-places may be recollected by all whose age reaches fifty; and they are remembered with feelings in which shuddering and scorching are strangely combined, but which are almost unknown, and scarcely to be imagined, by the present generation. Chimneys which did not smoke were the exception to the general rule; and the exposure of the surface of the body to cold currents generated the acute pains of rheumatism, while the frequent alternations of an increased and checked perspiration caused colds, to be followed, in regular course, by pulmonary complaints. In this state of things Rumford undertook to remedy the manifold evils of the open fireplace.’

Observing that the heat of a mass of blazing fuel in a grate consisted of two parts――that which radiated into the room, and served the purposes of warmth; and that which, by heating the column of air in the chimney, caused it to ascend, Rumford saw that an enormous saving could be effected by diminishing the size of the grate. Instead of a cubical mass of fuel, such as was generally used, he proposed to employ a grate of ordinarily broad front, but not deep backward, and with the sides not perpendicular to the front, but inclining. The effect of this was to limit the fire to the single function of warming the room by radiation from its front, while the mass of coal which had formerly been consumed without any benefit to the apartment was saved. In order, however, to prevent the smoking of the chimneys which would have arisen from this diminution of the burning mass, another change was necessary, and this was the narrowing the throat of the chimney, so as to allow no more air to pass through it than the precise quantity required to maintain the combustion. ‘The immoderate size of the throats of chimneys,’ says Rumford, ‘is the great fault of their construction. It is this fault which ought always first to be attended to in every attempt which is made to improve them; for however perfect the construction of a fireplace may be in other respects, if the opening left for the passage of the smoke is larger than is necessary for that purpose, nothing can prevent the warm air of the room from escaping through it; and whenever this happens, there is not only an unnecessary loss of heat, but the warm air which leaves the room to go up the chimney being replaced by cold air from without, drafts of cold air cannot fail to be produced in the room, to the great annoyance of those who inhabit it.’

Such is a general description of Count Rumford’s alterations in fireplaces. The subject, however, was pursued by him to its minutest details, and illustrated by numerous and specific plans for curing smoky chimneys under all possible circumstances. He likewise invented various forms of stoves and grates, intended to exhibit the model perfection of an apparatus for heating rooms, or for cooking victuals. So thorough and complete was his investigation of the subject, that little remained afterwards to be added to his conclusions; and it may be said, that any case of the continuance of a smoky chimney after the publication of his essays, arose from a neglect or misapplication of the principles there developed.

After some stay in Great Britain, he returned to Munich in 1796, accompanied by his daughter, who had come over from America at his request, her mother having died in 1792. What were Count Rumford’s relations with America, during the long interval of his absence from it, we have no means of ascertaining; as far as can be inferred, however, he seems to have maintained little correspondence with his former friends in the United States till after his wife’s death; and one cannot help remarking the unpleasing circumstance, that while on one side of the Atlantic the husband was enjoying an honorable position, and filling a large space in the public eye, the wife and daughter continued during the life of the former to reside on the other.

Rumford, on his return to Munich, was occupied in very important affairs. The advance of the French republican army under Moreau obliged the elector to quit the capital, leaving a council of regency, with Rumford at its head. Rumford succeeded in the arduous task of freeing Bavaria from invasion, and his conduct on this occasion increased his reputation with the elector and with the people. Among other tokens of the elector’s gratitude for his services, he was permitted to settle one-half of the pension which he enjoyed on his daughter, to be paid during her lifetime. In 1798 the elector, partly with a view to gratify him with an honor which he knew he desired, and partly to afford him another opportunity of relaxation for the improvement of his health, appointed him ambassador at the court of Great Britain. On arriving in London, however, Rumford found, that in consequence of the English legal fiction, by which a born subject of the country is declared incapable of ever alienating his allegiance, he could not be received as the Bavarian ambassador. Mortified as he must have been by this circumstance, and still more deeply grieved by the loss of his friend and patron, the Elector Charles Theodore, who died in 1799, Rumford contemplated returning to spend the remainder of his life in the land of his birth. In compliance with a formal invitation which he received from the United States government, he was making preparations for his return, and had written to a friend to secure a cottage in the vicinity of Boston, as a ‘quiet little retreat,’ when he was led to change his design, and remain in London, in the society of which he occupied a conspicuous place. During several years, a great part of the Count Rumford’s time was devoted to the interests of the Royal Institution, of which he may be considered the founder. The objects of this institution, now one of the recognized scientific establishments of the world, and one which can boast of having given employment to such men as Young, Davy, Brande, and Faraday, were ‘to diffuse the knowledge and facilitate the general introduction of useful mechanical inventions and improvements, and to teach, by courses of philosophical lectures and experiments, the application of science to the useful purposes of life.’ Such an institution was precisely the one which Rumford was qualified to superintend; and in its early history, the influence of his peculiar habits of thought is discernable in the choice of subjects for investigation by the members. Subsequently, the institution assumed the high scientific character which it yet holds.

In 1802, Count Rumford left England, and spent some time in travel. Revisiting Munich, he found the workhouse which he had planned, and which had been instrumental in producing so much good, abolished, and the new elector, Maximilian, friendly indeed but indisposed to follow the footsteps of his predecessor. Accordingly, after assisting in modeling a Bavarian academy of sciences, he took farewell of his adopted country, and went to reside in Paris, retaining an income of about £1200 from the Bavarian court. At the same time his daughter returned to America, her father having abandoned his intention of returning along with her. In Paris, Count Rumford appears at first to have gained the good-will and esteem which had attended him so remarkably during his previous life; and not long after he began his residence there, he contracted a second marriage with the widow of the celebrated Lavoisier, put to death during the French Revolution. From 1804 to 1814 he resided with his wife at Auteuil, a villa at a short distance from Paris, the property of Madame Lavoisier, and the scene of many of her former husband’s discoveries. Here Rumford employed himself in scientific pursuits of a miscellaneous nature. The union of the American-born citizen of the world with the widow of the illustrious Frenchman does not appear to have been a happy one; and there is evidence that, towards the end of his life, Rumford had become unpopular in Parisian society. Cuvier attributes this to a certain coarseness and want of urbanity of manner; possibly, however, the fault was less in the person criticised than in the Parisian standard of criticism, for the charge seems inconsistent with the tenor of Rumford’s life.

Rumford’s death took place at Auteuil on the 21st of August 1814, in the sixty-second year of his age. He left some bequests for the promotion of science in America; the rest of his property, which does not appear to have been great, he left to his relatives. His only daughter inherited the title of Countess of Rumford, with the continuation of her father’s Bavarian pension. She is, we believe, still alive, and has long resided in Paris.

Rumford, whose memoirs we have now detailed, was not a faultless character, or a person in every respect exemplary; but making due allowances for circumstances in which he was at the outset unfortunately placed, and keeping in mind that every man is less or more the creature of the age in which he lives, we arrive at the conclusion, that few individuals occupying a public position have been so thoroughly deserving of esteem. The practical, calm, and comprehensive nature of his mind, his resolute and methodical habits, the benevolence and usefulness of his projects, all excite our admiration. Cuvier speaks of Rumford as ‘having been the benefactor of his species without loving or esteeming them, as well as of holding the opinion that the mass of mankind ought to be treated as mere machines.’ A remark this which is applicable to not a few men who have been eminent for labors of a humane description, and which naturally gives rise to this other remark――that a good intellectual method, directed to practical ends, is often of more value to mankind than what is called a good heart.

NICOLAS COPERNICUS.

In the whole range of human science, no subject is calculated to excite such sublime ideas as astronomy; and to its study, therefore, the greatest minds have been directed both in ancient and modern times. Ancient, however, as are the investigations into the relations of the heavenly bodies, a correct idea of the planetary system was scarcely known before the sixteenth century of the Christian era. The theory generally received on that subject by the Chaldeans, Egyptians, Greeks, and other ancient nations, and which continued predominant till a comparatively recent period, described the earth as the center of all bodies occupying space, while the Moon, Venus, Mercury, the Sun, the planets, and the stars, revolved around it on a succession of solid spheres, at different distances, and at different rates of speed, so as to produce the appearances which are daily and nightly presented to our eyes in the heavens. Six centuries before the commencement of our era, Anaximander, Pythagoras, and other Grecian philosophers, had conceived some faint notion of a more correct system; but when they ventured to suggest that the sun was a fixed body, and that the earth was only one of a set of planets moving round it, they experienced so much persecution on account of the inconsistency of their doctrines with the religious ideas of the people, that they failed to establish their theory on a permanent basis. When learning and the arts revived in Italy in the fourteenth and fifteenth centuries, some attention was paid in the universities to astronomy; but the system taught was no better than that which Aristotle, Ptolemy, and other ancient astronomers had sanctioned, and which represented the sun and planets as moving round the earth. The time at length arrived for the revival of the correct notions entertained by Anaximander and Pythagoras.

Nicolas Copernicus, the modern to whom the honor of reviving that doctrine is due, was born, February 19, 1473, at Thorn, on the Vistula――a place now included in the dominions of the king of Prussia. The father of Copernicus was a native of Westphalia, a part of Germany: he had chanced to settle at Thorn, as a surgeon, about ten years before the birth of his son. Young Copernicus was educated for the profession of medicine at the university of Cracow; but his favorite studies were mathematics, perspective, astronomy, and painting. At an early age, inspired by an eager wish to distinguish himself in astronomy, he proceeded to Italy, and studied that science at the university of Bologna. It is supposed that a discovery of his teacher Dominic Maria, respecting the changes of the axis of the earth, was what first awakened his mind to the errors of the planetary system then taught. From Bologna he proceeded to Rome, where for some time he taught mathematics with great success――pursuing all the while, as far as circumstances would permit, his astronomical observations.

When he afterwards returned to his native country, his maternal uncle, the bishop of Ermeland, appointed him a canon in the cathedral of Frauenburg and at the same time he was nominated by the inhabitants of his native town to be archdeacon in one of their churches. He then resolved to devote his life to three objects――the performance of his clerical duties, gratuitous medical attendance on the poor, and the pursuit of his favorite studies. His residence was established in one of the houses belonging to the canons of Frauenburg, on the brow of a height near the cathedral, where astronomical observations could be conducted under very favorable circumstances; and in its walls are still to be seen the openings which he made, in order to observe the passage of stars across the meridian. It is supposed to have been about the year 1507 that he first became convinced of the superiority of the planetary theory of Pythagoras. He determined, however, to be very cautious in adopting, and still more cautious in announcing, an opinion so much at variance with the ordinary ideas of mankind. Mathematical instruments were in that age very rude, and the telescope had not been invented. The only implements which Copernicus had for making observations were two, coarsely framed of firwood, with measures marked by lines of ink. Thus provided, he devoted himself for several years to the inquiries necessary for proving his theory; and at length, about the year 1530, he had completed a work, in which the whole system was expounded――namely, the immobility of the sun in the centre of the planetary system; while its apparent motion, and the alternations of day and night, were to be attributed to the annual and diurnal movements of the earth. The real distances of the planets, and the declination of the pole of the earth, were also explained.

The doctrines of Copernicus were already known to a considerable number of learned and comparatively enlightened persons, who received them with due respect; and it is creditable to the Romish church that several of its dignitaries were among the number. But the bulk of mankind, including their religious teachers, were then comparatively ignorant, and accordingly prejudiced; and however firm the conviction of the astronomer as to the truth of his theory, he yet hesitated to make it public, dreading the opposition it would have to encounter――seeing that it opposed the inveterate prejudices of the learned, and the illusory testimony of the senses. In reasoning, they acted under the guidance of rules which made it scarcely possible for them to ascertain truth, or to acknowledge it when it was presented to them in the clearest light. If anything had been said in former times by a person whose memory they respected, they would not willingly listen to anything which contradicted, or seemed to contradict it. They walked, in short, by authority, and not by the dictates of reflection; and the consequence was, that every new truth which experience or the inquiries of the best minds brought forth, had to contend with the less worthy notions which had come down from earlier and darker ages. Amongst the opinions received by them, was that which represented the earth as the immovable centre of the universe. It was sanctioned by the greatest men of ancient times; it had long been taught; it was conformable to the common appearances of things; and various passages in the Scriptures were believed to assert it, though in reality those passages only do not contradict (and this probably for wise purposes) the ordinary ideas of mankind respecting the stability of the earth. Copernicus only acted, therefore, with necessary caution, when he hesitated to publish the work which had cost him the labor of so many years.

Rheticus, one of the friends to whom he had communicated his theory, at length, in 1540, ventured to give an outline of it to the world in a small pamphlet, which he published without his name. As this excited no disapprobation, the same person reprinted it next year with his name. In both publications the doctrines were ascribed openly to Nicolas Copernicus. About the same time, a learned man, Erasmus Reinhold, in a work which he published, spoke of the new doctrines with the greatest respect, and styled their author a second Ptolemy; for it often happens that the greatest compliment that can be paid to the discoverer of truth, is to mention him in the same breath with some founder of error. Copernicus now allowed himself to be pursuaded by his friends to publish his work; and it was accordingly put to press at Nuremburg, under the care of some learned persons of that city. But he was now an old man, and it was not his lot to live to see the book published. As soon as it was printed, a copy of it was sent to him by his friend Rheticus, but it only reached him, May 23, 1543, a few hours before he expired. He appeared to be scarcely conscious of the object to which so many years of his life had been devoted. But his mission was accomplished. Committed to the perpetuating operations of the infant printing-press, all danger was over of losing the germ of those great and fertile truths which in our days render astronomy the most perfect of sciences.

The theory of Copernicus was thus brought before the world; but, whether from the death of the philosopher, or because little disturbance of popular notions was anticipated from so learned a work, or from whatever other circumstances, it was visited with no marks of reprobation from any quarter at the time. In proportion, however, as it became known, so did its opponents increase. Those were the days when the fagot and stake made short work with those who presumed to strike out a course of thinking for themselves; and though the author of the system and its immediate adopters passed unmolested, yet during the century which ensued were its followers and supporters persecuted with all the zeal and cruelty that bigotry and ignorant prejudice could devise. Truth, however, is imperishable; and, though repressed and retarded for a season, is ever sure to take its right place among the established beliefs of mankind. And thus it has been with the Copernican theory, whose importance to the progress of accurate science we cannot in reality over-estimate. To form anything like an adequate idea of the value of its author’s services to the cause of science, we must place ourselves back in the time and circumstances which saw their birth. Then, it must be remembered, the want of telescopes rendered all appearances in the sky much more difficult of explanation than they would have been a century later. The accumulated errors and superstitions of fourteen centuries were not to be easily shaken and removed; neither were the prejudices and dogmas of the learned to be disturbed with impunity. What might have been astronomical science, was, even in the writings of the fathers, little better than a mass of absurd and subtle disquisitions on the substance of the heavens and the heavenly bodies. All these Copernicus had to surmount; and the elaboration of his theory presents an ever-memorable example of the power of patient and earnest thought in the investigation of a complicated subject, and acuteness of discrimination between the true and the fallacious.

TYCHO BRAHE.