It was not only in the Council that Goethe had to do difficult service. He was intrusted by the Duke with many special duties, all of which he fulfilled with scrupulous care. He had frequently, for instance, to carry on negotiations with the Estates of the two duchies, Weimar and Eisenach, both of which were subject to the Duke; and in the exercise of this delicate function he displayed unfailing firmness and tact. It was the Duke’s desire that the disused mines of Ilmenau should be reopened, and in connection with this scheme Goethe worked earnestly, studying the principles of mining, consulting with men who had a right to an opinion on the subject, and finally seeing that the undertaking was organized in accordance with the most advanced methods. He was made responsible for public works, and in this position had much to say as to the plans for the new Schloss and for the laying out of the Park in which his garden-house was situated. The University of Jena, which was the common property of the Saxon Duchies, he missed no opportunity of benefiting; and he did what he could for popular education in Weimar. The small military force of the duchy, consisting of six hundred men, was put under his care, so far as administration was concerned; and he not only brought it to a high state of efficiency, but made it less burdensome to the people by reforming the system according to which the troops were levied. He insisted that the soldiers should be treated by their officers with more consideration than was in those days thought to be safe or proper, and for soldiers’ daughters he established a school of spinning and embroidery, which he placed under the charge of Seidel, whom he knew he could trust. As he had to ride about a great deal in attending to military matters, it was considered that no one could so well manage everything connected with public highways; and this duty also he readily undertook. It became his business, too, to look after the demesne lands, and here one is glad to think he had the aid of a thoroughly competent Englishman, George Batty, for whose energy, skill, and good sense Goethe had profound respect. This part of his work was congenial to his tastes, but we find him on one occasion complaining bitterly that those in high places consumed in a day more than could be produced in the same time by the labours of all the toilers on the estates under his charge.

In discharging the various duties imposed upon him, Goethe became the soul of the entire administrative system, and diffused through all its branches much of his own vigour and thoroughness. As he did his own work honestly, he would take no dishonest work from others; and this came to be well understood by every one who had to carry out his orders. For a long time he was not unhappy in his labours. “The pressure of affairs,” he wrote in 1779, “is very good for the mind; when it has disburdened itself, it plays more freely and enjoys life. There is nothing more miserable than a comfortable man without work.” Again: “Many a time I feel as if I ought, like Polycrates, to throw my most precious jewel into the water. In everything I undertake I have luck.”

During these years Goethe disciplined the body not less strictly than the mind. He slept on a straw mattrass, and drank only half the quantity of wine to which he had formerly accustomed himself. Riding, walking, fencing, and other forms of physical exercise he delighted in; and—what must then have been thought an extraordinary eccentricity—he took cold baths regularly in winter as well as in summer. The result of all this was that he enjoyed better health than at any previous period of his life.

His manner necessarily changed to some extent in accordance with the change in his character. He was still occasionally capable of the frank and genial outbursts of feeling that had so often delighted his comrades in the days of “Sturm und Drang,” but, upon the whole, he became more calm, sedate, and reserved. This did not mean that there was any diminution of the kindly impulses of his character. Every one who knew him well was aware that the fine spirit of humanity that had welled up so freely in his nature in the early part of his life never, as years went on, lost its original depth and freshness. In the winter of 1777 he went to the Harz mountains, and one of his objects in undertaking the journey was to see whether he could not help a young man who, although a perfect stranger to him, had ventured to tell him, by letter, of troubles that made life intolerable. An unfortunate man who, although also a stranger, appealed to Goethe, received an appointment at Ilmenau, where Goethe not only gave him material aid, but with constant kindness and sympathy encouraged him to maintain his own self-respect by doing valuable work. “Goethe,” wrote Merck, while visiting his old friend, “directs everything, and every one is pleased with him, for he serves many and hurts none. Who can resist the unselfishness of the man?”

In 1778 Goethe spent some days with the Duke in Berlin, and in the autumn of the following year they went together to Switzerland. On the way to Switzerland Goethe rode out from Strasburg to Sesenheim, and spent a night in the parsonage. He was touched by the frank and kindly way in which Frederika Brion received him, and, as he said good-bye, felt with relief that in future he might think of her with an easier mind. In Strasburg he visited Frau von Türckheim, who was no other than Lili, now the wife of a rich banker, and a mother. At Emmendingen he stood by the grave of his sister, who, to his great sorrow, had died in 1777. “Aunt Fahlmer” had become Schlosser’s wife, and it made a strange impression on Goethe to see her in his sister’s place. At Frankfort the party were hospitably received by his mother. His father, now an old man, was less genial, for he had never quite recovered from the disappointment caused by Goethe’s choice of a career at Weimar. Goethe did not again see his father, who died in 1782.

A few days before he started for Switzerland Goethe had been made a “Geheimerath,” and in 1782 he became President of the Chamber of Finance. In the same year he received a patent of nobility, so that he was from this time Johann Wolfgang von Goethe. Any pleasure he may have derived from this honour was due to the fact that it did away with some inconveniences arising from the etiquette of the petty German Courts.

In 1783, being jaded by overwork, he restored himself to fresh vigour by a second visit to the Harz mountains. This tour was made doubly pleasant by the fact that he had with him Frau von Stein’s son Fritz, a clever boy for whom he had a warm affection. With Frau von Stein’s sanction, Goethe had taken Fritz to live with him, and it was a constant delight to him to have the boy’s companionship, to direct his education, and to watch the gradual unfolding of his mind and character.

During this period Goethe entered upon the scientific investigations which were to occupy many of the best hours of his life. Almost from boyhood he had had a strong inclination for the study of science. At Leipsic he attended lectures on physics and medicine, and at Strasburg, as we have seen, he gave some attention to various branches of biology. Now he devoted himself to science with an enthusiasm not less fervent than that with which he had devoted himself to literature. He began with mineralogy, to which he was led by his labours in connection with the Ilmenau mines, and mineralogy soon made it necessary for him to turn his thoughts to geology. Afterwards he occupied himself chiefly with osteology and botany. For his investigations in all these subjects he had considerable advantages. The collections at the University of Jena were of course at his disposal, and the scientific professors were only too glad to have a chance of giving him what aid they could. In botany he was able to carry on long series of researches in his garden, and in the forests of the duchy, which he had frequently to visit as an administrator. He took up the study of science in a serious spirit, and, as the results proved, he had a high capacity for it. He was a careful and most exact observer, and his imagination, so far from standing in his way, was the power to which he owed the greatest and most fertile of his ideas.

It was in osteology that he made his first important discovery. In the study of this branch of anatomy he was interested mainly in the points of comparison between the human skeleton and the skeletons of other vertebrates. It was generally held that the intermaxillary bone, which is found in the upper jaw of some animals, is wanting in man, and this was regarded as a proof of the doctrine that the physical nature of man is vitally distinguished from that of other living creatures. On March 27, 1784, while examining various bones with his friend Professor Loder, of the University of Jena, Goethe was greatly surprised to discover what he believed to be the intermaxillary bone in a human jaw. He lost no time in comparing it with the various forms assumed by the bone in different species of animals, and the more widely the comparison was extended the more sure he became that he was right. The results of his researches he set forth in an essay, illustrated by drawings. This essay, which is a model of lucid statement, was translated into Latin, and submitted to several men of science. It was not, however, published until about thirty years afterwards.

Goethe’s discovery of the intermaxillary bone in a human jaw finally disposed of the notion that it is possible to draw a sharp line of distinction between the physical nature of man and that of other vertebrates. And it led Goethe to the theory that all organic beings of the same class are formed in accordance with ideal types or patterns, which Nature modifies indefinitely to suit varying conditions. This conception marked an epoch in the history of scientific thought, for by fastening attention on the fact that organic beings of the same class, however widely their organs may seem to differ from one another, have a fundamental agreement in structure, it directly prepared the way for the discovery of the law of evolution, in which this fact is taken up and explained.