four intimate acquaintances, and talk of scientific matters, each one in his turn presenting a subject which is first developed by him, and then discussed by all. These exercises are very instructive. As my share, I have begun to give a course of natural history, or rather of pure zoology. Braun talks to us of botany, and another of our company, Mahir, who is an excellent fellow, teaches us mathematics and physics in his turn. In two months our friend Schimper, whom we left at Heidelberg, will join us, and he will then be our professor of philosophy. Thus we shall form a little university, instructing each other and at the same time learning what we teach more thoroughly, because we shall be obliged to demonstrate it. Each session lasts two or three hours, during which the professor in charge retails his merchandise without aid of notes or book. You can imagine how useful this must be in preparing us to speak in public and with coherence; the experience is the more important, since we all desire nothing so much as sooner or later to become professors in very truth, after having played at professor in the university.

This brings me naturally to my projects again. Your letter made me feel so keenly the anxiety I had caused you by my passion for travel, that I will not recur to it; but as my object was to make in that way a name that would win for me a professorship, I venture upon another proposition. If during the course of my studies I succeed in making myself known by a work of distinction, will you not then consent that I shall study, at least during one year, the natural sciences alone, and then accept a professorship of natural history, with the understanding that in the first place, and in the time agreed upon, I shall take my Doctor's degree? This is, indeed, essential to my obtaining what I wish, at least in Germany. You will object that, before thinking of anything beyond, I ought first to fulfill the condition. But let me say that the more clearly a man sees the road before him, the less likely he is to lose his way or take the wrong turn,--the better he can divide his stages and his resting-places. . .

FROM HIS FATHER.

ORBE, March 25, 1828.

. . .I have had a long talk about you with your uncle. He does not at all disapprove of your letters, of which I told him the contents. He only insists, as we do, on the necessity of a settled profession as absolutely essential to your financial position. Indeed, the natural sciences, however sublime and attractive, offer nothing certain in the future. They may, no doubt, be your golden bridge, or you may, thanks to them, soar very high, but--modern Icarus--may not also some adverse fortune, an unexpected loss of popularity, or, perhaps, some revolution fatal to your philosophy, bring you down with a somersault, and then you would not be sorry to find in your quiver the means of gaining your bread. Agreed that you have now an invincible repugnance to the practice of medicine, it is evident from your last two letters that you would have no less objection to any other profession by which money is to be made, and, besides, it is too late to make another selection. This being so, we will come to an understanding in one word: Let the sciences be the balloon in which you prepare to travel through higher regions, but let medicine and surgery be your parachutes. I think, my dear Louis, you cannot object to this way of looking at the question and deciding it. In making my respects to the professor of zoology, I have the pleasure to tell him that his uncle was delighted with his way of passing his evenings, and congratulates him with all his heart on his choice of a recreation. Enough of this chapter. I close it here, wishing you most heartily courage, health, success, and, above all, contentment. . .

Upon this follows the answer to Louis's request for details about the "Society of Public Utility." It shows the intimate exchange of thought between father and son on educational subjects, but it is of too local an interest for reproduction here.

The Easter vacation was devoted to a short journey, some account of which will be found in the next letter. The traveling party consisted of Agassiz, Braun, and Schimper, with two other students, who did not, however, remain with them during the whole trip.

TO HIS FATHER.

MUNICH, May 15, 1828.

. . .Pleasant as my Easter journey was, I will give you but a brief account of it, for my enjoyment was so connected with my special studies that the details would only be tiresome to you. You know who were my traveling companions, so I have only to tell you of our adventures, assuredly not those of knights errant or troubadours. Could these gentry have been resuscitated, and have seen us starting forth in blouses, with bags or botanical boxes at our backs and butterfly-nets in our hands, instead of lance and buckler, they could hardly have failed to look down upon us with pity from the height of their grandeur.

The first day brought us to Landshut, where was formerly the university till it was transferred, ten years ago, to Munich. We had the pleasure of finding along our road most of the early spring plants. The weather was magnificent, and nature seemed to smile upon her votaries. . .We stopped on the way but one day, at Ratisbon, to visit some relations of Braun's, with whom we promised to spend several days on our return. Learning on our arrival at Nuremberg that the Durer festival, which had been our chief inducement for this journey, would not take place under eight or ten days, we decided to pass the intervening time at Erlangen, the seat, as you know, of a university. I do not know if I have already told you that among German students the exercise of hospitality toward those who exchange visits from one university to another is a sacred custom. It gives offense, or is at least looked upon as a mark of pride and disdain, if you do not avail yourself of this. We therefore went to one of the cafe's de reunion, and received at once our tickets for lodgings. We passed six days at Erlangen most agreeably, making a botanical excursion every day. We also called upon the professors of botany and zoology, whom we had already seen at Munich, and by whom we were most cordially received. The professor of botany, M. Koch, invited us to a very excellent dinner, and gave us many rare plants not in our possession before, while M. Wagner was kind enough to show us in detail the Museum and the Library.

At last came the day appointed for the third centennial festival of Durer. Everything was so arranged as to make it very brilliant, and the weather was most favorable. I doubt if ever before were collected so many painters in the same place. They gathered; as if to vie with each other, from all nations, Russians, Italians, French, Germans, etc. Beside the pupils of the Academy of Fine Arts at Munich, I think that every soul who could paint, were it only the smallest sketch, was there to pay homage to the great master. All went in procession to the place where the monument is to be raised, and the magistrates of the city laid the first stones of the pedestal. To my amusement they cemented these first stones with a mortar which was served in great silver platters, and made of fine pounded porcelain mixed with champagne. In the evening all the streets were illuminated; there were balls, concerts, and plays, so that we must have been doubled or quadrupled to see everything. We stayed some days longer at Nuremberg to visit the other curiosities of the city, especially its beautiful churches, its manufactories, etc., and then started on our return to Ratisbon. . .

CHAPTER 3.

1828-1829: AGE 21-22.

First Important Work in Natural History. Spix's Brazilian Fishes. Second Vacation Trip. Sketch of Work during University Year. Extracts from the Journal of Mr. Dinkel. Home Letters. Hope of joining Humboldt's Asiatic Expedition. Diploma of Philosophy. Completion of First Part of the Spix Fishes. Letter concerning it from Cuvier.

It was not without a definite purpose that Agassiz had written to his father some weeks before, "Should I during the course of my studies succeed in making myself known by a distinguished work, would you not then consent that I should study for one year the natural sciences alone?" Unknown to his parents, for whom he hoped to prepare a delightful surprise, Agassiz had actually been engaged for months on the first work which gave him distinction in the scientific world; namely, a description of the Brazilian fishes brought home by Martius and Spix from their celebrated journey in Brazil. This was the secret to which allusion is made in the next letter. To his disappointment an accident brought his undertaking to the knowledge of his father and mother before it was completed. He always had a boyish regret that his little plot had been betrayed before the moment for the denouement arrived. The book was written in Latin and dedicated to Cuvier.* (* "Selecta genera et species piscium quos collegit et pingendos curavit Dr. J.W. de Spix". Digessit, descripsit et observationibus illustravit Dr. L. Agassiz.)

TO HIS BROTHER.

MUNICH, July 27, 1828.

. . .Various things which I have begun keep me a prisoner here. Probably I shall not stir during the vacation, and shall even give up the little trip in the Tyrol, which I had thought of making as a rest from occupations that bind me very closely at present, but from which I hope to free myself in the course of the holidays. Don't be angry with me for not telling you at once what they are. When you know, I hope to be forgiven for keeping you so long in the dark. I have kept it a secret from papa too, though in his last letter he asks me what is my especial work just now. A few months more of patience, and I will give you a strict account of my time since I came here, and then I am sure you will be satisfied with me. I only wish to guard against one thing: do not take it into your head that I am about to don the fool's cap suddenly and surprise you with a Doctor's degree; that would be going a little too fast, nor do I think of it yet. . .I want to remind you not to let the summer pass without getting me fishes according to the list in my last letter, which I hope you have not mislaid. You would give me great pleasure by sending them as soon as possible. Let me tell you why. M. Cuvier has announced the publication of a complete work on all the known fishes, and in the prospectus he calls on such naturalists as occupy themselves with ichthyology to send him the fishes of the country where they live; he mentions those who have already sent him collections, and promises duplicates from the Paris Museum to those who will send him more. He names the countries also from which he has received contributions, and regrets that he has nothing from Bavaria. Now I possess several specimens of all the native species, and have even discovered some