side. Farther on the valley widens, and a pretty rising ground, crowned by ruins, suddenly presents itself in the midst of a wide plain, where sheep are feeding. Neckarsteinach itself is only a little village, containing, however, three castles, two of which are in ruins. The third is still inhabited, and commands a magnificent view. In the evening we returned to Heidelberg by moonlight.

Another day we started for what is here called "The Mountain," though it is at most no higher than Le Suchet. As the needful supplies are not to be obtained there, we took our provisions with us. We had so much fun out of this, that I must tell you all about it. In the morning Z--bought at the market veal, liver, and bacon enough to serve for three persons during two days. To these supplies we added salt, pepper, butter, onions, bread, and some jugs of beer. One of us took two saucepans for cooking, and some alcohol. Arrived at the summit of our mountain, we looked out for a convenient spot, and there we cooked our dinner. It did not take long, nor can I say whether all was done according to the rules of art. But this I know,--that never did a meal seem to me better. We wandered over the mountain for the rest of the day, and at evening came to a house where we prepared our supper after the same fashion, to the great astonishment of the assembled household, and especially of an old woman who regretted the death of her husband, because she said it would certainly have amused him. We slept on the ground on some straw, and returned to Heidelberg the next day in time for dinner. The following day we went to Mannheim to visit the theatre. It is very handsome and well appointed, and we were fortunate in happening upon an excellent opera. Beyond this, I saw nothing of Mannheim except the house of Kotzebue and the place where Sand was beheaded.

To-day I have made my visits to the professors. For three among them I had letters from Professors Schinz and Hirzel. I was received by all in the kindest way. Professor Tiedemann, the Chancellor, is a man about the age of papa and young for his years. He is so well-known that I need not undertake his panegyric here. As soon as I told him that I brought a letter from Zurich, he showed me the greatest politeness, offered me books from his library; in one word, said he would be for me here what Professor Schinz, with whom he had formerly studied, had been for me in Zurich. After the opening of the term, when I know these gentlemen better, I will tell you more about them. I have still to describe my home, chamber, garden, people of the house, etc.

The next letter fills in this frame-work.

TO HIS FATHER.

HEIDELBERG, May 24, 1826.

. . .According to your request, I am going to write you all possible details about my host, the employment of my time, etc., etc. Mr.--, my "philister," is a tobacco merchant in easy circumstances, having a pretty house in the faubourg of the city. My windows overlook the town, and my prospect is bounded by a hill situated to the north of Heidelberg. At the back of the house is a large and fine garden, at the foot of which is a very pretty summer-house. There are also several clumps of trees in the garden, and an aviary filled with native birds. . .

Since each day in term time is only the repetition of every other, the account of one will give an idea of all, especially as I follow with regularity the plan of study I have formed. Every morning I rise at six o'clock, dress, and breakfast. At seven I go to my lectures, given during the morning in the Museum building, next to which is the anatomical laboratory. If, in the interval, I have a free hour, as sometimes happens from ten to eleven, I occupy it in making anatomical preparations. I shall tell you more of that and of the Museum another time. From twelve to one I practice fencing. We dine at about one o'clock, after which I walk till two, when I return to the house and to my studies till five o'clock. From five to six we have a lecture from the renowned Tiedemann. After that, I either take a bath in the Neckar or another walk. From eight to nine I resume my special work, and then, according to my inclination, go to the Swiss club, or, if I am tired, to bed. I have my evening service and talk silently with you, believing that at that hour you also do not forget your Louis, who thinks always of you. . .As soon as I know, for I cannot yet make an exact estimate, I will write you as nearly as possible what my expenses are likely to be. Sometimes there may be unlooked-for expenditures, as, for instance, six crowns for a matriculation paper. But be assured that at all events I shall restrict myself to what is absolutely necessary, and do my best to economize. The same of the probable duration of my stay in Heidelberg; I shall certainly not prolong it needlessly. . .

Now for the first time the paths of the two brothers separated, Auguste returning from Zurich to Neuchatel, where he entered into business. It chanced, however, that in one of the first acquaintances made by Louis in Heidelberg he found not only a congenial comrade, but a friend for life, and in after years a brother. Professor Tiedemann, by whom Agassiz had been so kindly received, recommended him to seek the acquaintance of young Alexander Braun, an ardent student, and an especial lover of botany. At Tiedemann's lecture the next day Agassiz's attention was attracted by a young man who sat next him, and who was taking very careful notes and illustrating them. There was something very winning in his calm, gentle face, full of benevolence and intelligence. Convinced by his manner of listening to the lecture and transcribing it that this was the student of whom Tiedemann had spoken, Agassiz turned to his neighbor as they both rose at the close of the hour, and said, "Are you Alex Braun?" "Yes, and you, Louis Agassiz?" It seems that Professor Tiedemann, who must have had a quick eye for affinities in the moral as well as in the physical world, had said to Braun also, that he advised him to make the acquaintance of a young Swiss naturalist who had just come, and who seemed full of enthusiasm for his work. The two young men left the lecture-room together, and from that time their studies, their excursions, their amusements, were undertaken and pursued in each other's company. In their long rambles, while they collected specimens in their different departments of Natural History, Braun learned zoology from Agassiz, and he, in his turn, learned botany from Braun. This was, perhaps, the reason why Alexander Braun, afterward Director of the Botanical Gardens in Berlin, knew more of zoology than other botanists, while Agassiz himself combined an extensive knowledge of botany with his study of the animal kingdom. That the attraction was mutual may be seen by the following extract from a letter of Alexander Braun to his father.

BRAUN To HIS FATHER.

HEIDELBERG, May 12, 1826.

. . .In my leisure hours, between the forenoon and afternoon lectures, I go to the dissecting-room, where, in company with another young naturalist who has appeared like a rare comet on the Heidelberg horizon, I dissect all manner of beasts, such as dogs, cats, birds, fishes, and even smaller fry, snails, butterflies, caterpillars, worms, and the like. Beside this, we always have from Tiedemann the very best books for reference and comparison, for he has a fine library, especially rich in anatomical works, and is particularly friendly and obliging to us.

In the afternoon from two to three I attend Geiger's lectures on pharmaceutical chemistry, and from five to six those of Tiedemann on comparative anatomy. In the interval, I sometimes go with this naturalist, so recently arrived among us (his name is Agassiz, and he is from Orbe), on a hunt after animals and plants. Not only do we collect and learn to observe all manner of things, but we have also an opportunity of exchanging our views on scientific matters in general. I learn a great deal from him, for he is much more at home in zoology than I am. He is familiar with almost all the known mammalia, recognizes the birds from far off by their song, and can give a name to every fish in the water. In the morning we often stroll together through the fish market, where he explains to me all the different species. He is going to teach me how to stuff fishes, and then we intend to make a collection of all the native kinds. Many other useful things he knows; speaks German and French equally well, English and Italian fairly, so that I have already appointed him to be my interpreter on some future vacation trip to Italy. He is well acquainted with ancient languages also, and studies medicine besides. . .

A few lines from Braun to his mother, several weeks later, show that this first enthusiasm, poured out with half-laughing extravagance to his father, was ripening into friendship of a more serious character.

BRAUN TO HIS MOTHER.

HEIDELBERG, June 1, 1826.

. . .I am very happy now that I have found some one whose occupations are the same as mine. Before Agassiz came I was obliged to make my excursions almost always alone, and to study in hermit-like isolation. After all, two people working together can accomplish far more than either one can do alone. In order, for instance, to utilize the interval spent in the time-consuming and mechanical work of preparing specimens, pinning insects and the like, we have agreed that while one is so employed the other shall read aloud. In this way we shall go through various works on physiology, anatomy, and zoology.

Next to Alexander Braun, Agassiz's most congenial companion at Heidelberg was Karl Schimper, a friend of Braun, and like him a young botanist of brilliant promise. The three soon became inseparable. Agassiz had many friends and companions at the university beside those who, on account of their influence upon his after life, are mentioned here. He was too affectionate not to be a genial companion among his young countrymen of whom there were many at Heidelberg, where they had a club and a gymnasium of their own. In the latter, Agassiz bore his part in all the athletic sports, being distinguished both as a powerful gymnast and an expert fencer.

Of the professors then at Heidelberg, Leuckart, the zoologist, was, perhaps, the most inspiriting. His lectures were full of original suggestions and clever hypotheses, which excited and sometimes amused his listeners. He knew how to take advantage of the enthusiasm of his brighter pupils, and, at their request, gave them a separate course of instruction on special groups of animals; not without some personal sacrifice, for these extra lectures were given at seven o'clock in the morning, and the students were often obliged to pull their professor out of bed for the purpose. The fact that they did so shows at least the friendly relation existing between teacher and scholars. With Bischoff the botanist also, the young friends were admitted to the most kindly intercourse. Many a pleasant botanical excursion they had with him, and they owed to him a thorough and skillful instruction in the use of the