MUNICH, July 4, 1829.

. . .I hope when you read this letter you will have received the first part of my Brazilian Fishes from M.--, of Geneva, to whom Martius had to send a package of plants, with which my book was inclosed. I venture to think that this work will give me a name, and I await with impatience the criticism that I suppose it will receive from Cuvier. . .I think the best way of reaching the various aims I have in view is to continue the career on which I have started, and to publish as soon as possible my natural history of the fresh-water fishes of Germany and Switzerland. I propose to issue it in numbers, each containing twelve colored plates accompanied by six sheets of letter-press. . .In the middle of September there is to be a meeting of all the naturalists and medical men of Germany, to which foreign savants are invited. A similar meeting has been held for the last two or three years in one or another of the brilliant centres of Germany. This year it will take place at Heidelberg. Could one desire a better occasion to make known a projected work? I could even show the original drawings already made of species only found in the environs of Munich, and, so to speak, unknown to naturalists. At Heidelberg will be a.s.sembled Englishmen, Danes, Swedes, Russians, and even Italians. If I could before then arrange everything and distribute the printed circulars of my work I should be sure of success. . .

In those days of costly postage one sheet of writing paper was sometimes made to serve for several members of the family. The next crowded letter contains chiefly domestic details, but closes with a postscript from Mme. Aga.s.siz, filling, as she says, the only remaining corner, and expressing her delight in his diploma and in the completion of his book.

FROM HIS MOTHER.

August 16, 1829.

. . .The place your brother has left me seems very insufficient for all that I have to say, dear Louis, but I will begin by thanking you for the happiness, as sweet as it is deeply felt, which your success has given us. Already our satisfaction becomes the reward of your efforts. We wait with impatience for the moment when we shall see you and talk with you. Your correspondence leaves many blanks, and we are sometimes quite ashamed that we have so few details to give about your book. You will be surprised that it has not yet reached us. Does the gentleman in Geneva intend to read it before sending it to us, or has he perhaps not received the package? Not hearing we are uneasy. . .Good-by, my dear son; I have no room for more, except to add my tender love for you. An honorable mention of your name in the Lausanne Gazette has brought us many pleasant congratulations. . .

TO HIS FATHER.

August, 1829.

. . .I hope by this time you have my book. I can the less explain the delay since M. Cuvier, to whom I sent it in the same way, has acknowledged its arrival. I inclose his letter, hoping it will give you pleasure to read what one of the greatest naturalists of the age writes me about it.

CUVIER TO LOUIS AGa.s.sIZ.

PARIS, AU JARDIN DU ROI, August 3, 1829.

. . .You and M. de Martius have done me honor in placing my name at the head of a work so admirable as the one you have just published.

The importance and the rarity of the species therein described, as well as the beauty of the figures, will make the work an important one in ichthyology, and nothing could heighten its value more than the accuracy of your descriptions. It will be of the greatest use to me in my History of Fishes. I had already referred to the plates in the second edition of my "Regne Animal." I shall do all in my power to accelerate the sale among amateurs, either by showing it to such as meet at my house or by calling attention to it in scientific journals.

I look with great interest for your history of the fishes of the Alps. It cannot but fill a wide gap in that portion of natural history,--above all, in the different divisions of the genus Salmo.

The figures of Bloch, those of Meidinger, and those of Marsigli, are quite insufficient. We have the greater part of the species here, so that it will be easy for me to verify the characters; but only an artist, working on the spot, with specimens fresh from the water, can secure the colors. You will, no doubt, have much to add also respecting the development, habits, and use of all these fishes. Perhaps you would do well to limit yourself at first to a monograph of the Salmones.

With my thanks for the promised doc.u.ments, accept the a.s.surance of my warm regard and very sincere attachment.

B.G. CUVIER.

At last comes the moment, so long antic.i.p.ated, when the young naturalist's first book is in the hands of his parents. The news of its reception is given in a short and hurried note.

FROM HIS FATHER.

ORBE, August 31, 1829.

I hasten, my dear son, to announce the arrival of your beautiful work, which reached us on Thursday, from Geneva. I have no terms in which to express the pleasure it has given me. In two words, for I have only a moment to myself, I repeat my urgent entreaty that you would hasten your return as much as possible. . .The old father, who waits for you with open heart and arms, sends you the most tender greeting. . .

CHAPTER 4.

1829-1830: AGE 22-23.

Scientific Meeting at Heidelberg.

Visit at Home.

Illness and Death of his Grandfather.

Return to Munich.

Plans for Future Scientific Publications.

Takes his Degree of Medicine.

Visit to Vienna.

Return to Munich.

Home Letters.

Last Days at Munich.

Autobiographical Review of School and University Life.

TO HIS PARENTS.

HEIDELBERG, September 25, 1829.

. . .THE time of our meeting is almost at hand. Relieved from all anxiety about the subjects I had wished to present here, I can now be quietly with you and enjoy the rest and freedom I have so long needed. The tension of mind, forced upon me by the effort to reach my goal in time, has crowded out the thoughts which are most present when I am at peace. I will not talk to you of what I have been doing lately, (a short letter from Frankfort will have put you on my track), nor of the relations I have formed at the Heidelberg meeting, nor of the manner in which I have been received, etc.

These are matters better told than written. . .I intend to leave here to-morrow or the day after, according to circ.u.mstances. I shall stay some days at Carlsruhe to put my affairs in order, and from there make the journey home as quickly as possible. . .

The following month we find him once more at home in the parsonage of Orbe. After the first pleasure and excitement of return, his time was chiefly spent in arranging his collections at Cudrefin, where his grandfather had given him house-room for them. In this work he had the help of the family in general, who made a sort of scientific fete of the occasion. But it ended sadly with the illness and death of the kind old grandfather, under whose roof children and grandchildren had been wont to a.s.semble.

AGa.s.sIZ TO BRAUN.

ORBE, December 3, 1829.

. . .I will devote an hour of this last evening I am to pa.s.s in Orbe, to talking with you. You will wonder that I am still here, and that I have not written. You already know that I have been arranging my collections at Cudrefin, and spending very happy days with my grandfather. But he is now very ill, and even should we have better news of him to-day, the thought weighs heavily on my heart, that I must take leave of him when he is perhaps on his death-bed. . .I have just tied up my last package of plants, and there lies my whole herbarium in order,--thirty packages in all.

For this I have to thank you, dear Alex, and it gives me pleasure to tell you so and to be reminded of it. What a succession of glorious memories came up to me as I turned them over. Free from all disturbing incidents, I enjoyed anew our life together, and even more, if possible, than in actual experience. Every talk, every walk, was present to me again, and in reviewing it all I saw how our minds had been drawn to each other in an ever-strengthening union. In you I see my own intellectual development reflected as in a mirror, for to you, and to my intercourse with you, I owe my entrance upon this path of the n.o.blest and most lasting enjoyment.

It is delightful to look back on such a past with the future so bright before us. . .

Aga.s.siz now returned to Munich to add the t.i.tle of Doctor of Medicine to that of Doctor of Philosophy. A case of somnambulism, which fell under his observation and showed him disease, or, at least, abnormal action of the brain, under an aspect which was new to him, seems to have given a fresh impulse to his medical studies, and, for a time, he was inclined to believe that the vocation which had thus far been to him one of necessity, might become one of preference. But the naturalist was stronger than the physician.

During this very winter, when he was preparing himself with new earnestness for his profession, a collection of fossil fishes was put into his hands by the Director of the Museum of Munich. It will be seen with what ardor he threw himself into this new investigation. His work on the "Poissons Fossiles," which placed him in a few years in the front rank of European scientific men, took form at once in his fertile brain.

TO HIS BROTHER.

MUNICH, January 18, 1830.

. . .My resolve to study medicine is now confirmed. I feel all that may be done to render this study worthy the name of science, which it has so long usurped. Its intimate alliance with the natural sciences and the enlightenment it promises me regarding them are indeed my chief incitements to persevere in my resolution. In order to gain time, and to strike while the iron is hot (don't be afraid it will grow cold; the wood which feeds the fire is good), I have proposed to Euler, with whom I am very intimate, to review the medical course with me. Since then, we pa.s.s all our evenings together, and rarely separate before midnight,--reading alternately French and German medical books. In this way, although I devote my whole day to my own work about fishes, I hope to finish my professional studies before summer. I shall then pa.s.s my examination for the Doctorate in Germany, and afterward do the same in Lausanne. I hope that this decision will please mama. My character and conduct are the pledge of its accomplishment.

This, then, is my night-work. I have still to tell you what I do by day, and this is more important. My first duty is to complete my Brazilian Fishes. To be sure, it is only an honorary work, but it must be finished, and is an additional means of making subsequent works profitable. This is my morning occupation, and I am sure of bringing it to a close about Easter. After much reflection, I have decided that the best way to turn my Fresh-Water Fishes to account, is to finish them completely before offering them to a publisher.

All the expenses being then paid, I could afford, if the first publisher should not feel able to take them on my own terms, to keep them as a safe investment. The publisher himself seeing the material finished, and being sure of bringing it out as a complete work, the value of which he can on that account better estimate, will be more disposed to accept my proposals, while I, on my side, can be more exacting. The text for this I write in the afternoon.

My greatest difficulty at first was the execution of the plates.

But here, also, my good star has served me wonderfully. I told you that beside the complete drawings of the fishes I wanted to represent their skeletons and the anatomy of the soft parts, which has never been done for this cla.s.s. I shall thereby give a new value to the work, and make it desirable for all who study comparative anatomy. The puzzle was to find some one who was prepared to draw things of this kind; but I have made the luckiest hit, and am more than satisfied. My former artist continues to draw the fishes, a second draws the skeletons (one who had already been engaged for several years in the same way, for a work upon reptiles), while a young physician, who is an admirable draughtsman, makes my anatomical figures. For my share, I direct their work while writing the text, and thus the whole advances with great strides. I do not, however, stop here. Having by permission of the Director of the Museum one of the finest collections of fossils in Germany at my disposition, and being also allowed to take the specimens home as I need them, I have undertaken to publish the ichthyological part of the collection. Since it only makes the difference of one or two people more to direct, I have these specimens also drawn at the same time. Nowhere so well as here, where the Academy of Fine Arts brings together so many draughtsmen, could I have the same facility for completing a similar work; and as it is an entirely new branch, in which no one has as yet done anything of importance, I feel sure of success; the more so because Cuvier, who alone could do it (for the simple reason that every one else has till now neglected the fishes), is not engaged upon it. Add to this that just now there is a real need of this work for the determination of the different geological formations. Once before, at the Heidelberg meeting, it had been proposed to me; the Director of the Mines at Strasbourg, M. Voltz, even offered to send me at Munich the whole collection of fossil fishes from their Museum. I did not speak to you of this at the time because it would have been of no use. But now that I have it in my power to carry out the project, I should be a fool to let a chance escape me which certainly will not present itself a second time so favorably. It is therefore my intention to prepare a general work on fossil ichthyology. I hope, if I can command another hundred louis, to complete everything of which I have spoken before the end of the summer, that is to say, in July. I shall then have on hand two works which should surely be worth a thousand louis to me. This is a low estimate, for even ephemeral pieces and literary ventures are paid at this price. You can easily make the calculation. They allow three louis for each plate with the accompanying text; my fossils will have about two hundred plates, and my fresh-water fishes about one hundred and fifty. This seems to me plausible. . .

This letter evidently made a favorable impression on the business heads of the family at Neuchatel, for it is forwarded to his parents, with these words from his brother on the last sheet: "I hasten, dear father, to send you this excellent letter from my brother, which has just reached me. They have read it here with interest, and Uncle Francois Mayor, especially, sees both stability and a sound basis in his projects and enterprises."

There is something touching and almost amusing in Aga.s.siz's efforts to give a prudential aspect to his large scientific schemes. He was perfectly sincere in this, but to the end of his life he skirted the edge of the precipice, daring all, and finding in himself the power to justify his risks by his successes. He was of frugal personal habits; at this very time, when he was keeping two or three artists on his slender means, he made his own breakfast in his room, and dined for a few cents a day at the cheapest eating houses. But where science was concerned the only economy he recognized, either in youth or old age, was that of an expenditure as bold as it was carefully considered.

In the above letter to his brother we have the story of his work during the whole winter of 1830. That his medical studies did not suffer from the fact that, in conjunction with them, he was carrying on his two great works on the living and the dead world of fishes may be inferred from the following account of his medical theses. It was written after his death, to his son Alexander Aga.s.siz, by Professor von Siebold, now Director of the Museum in the University of Munich. "How earnestly Aga.s.siz devoted himself to the study of medicine is shown by the theses (seventy-four in number), a list of which was printed, according to the prescribed rule and custom, with his 'Einladung.' I am astonished at the great number of these. The subjects are anatomical, pathological, surgical, obstetrical; they are inquiries into materia medica, medicina forensis, and the relation of botany to these topics. One of them interested me especially. It read as follows. 'Foemina humana superior mare.' I would gladly have known how your father interpreted that sentence. Last fall (1873) I wrote him a letter, the last I ever addressed to him, questioning him about this very subject. That letter, alas! remained unanswered."

In a letter to his brother just before taking his degree, Aga.s.siz says: "I am now determined to pursue medicine and natural history side by side. Thank you, with all my heart, for your disinterested offer, but I shall not need it, for I am going on well with my publisher, M. Cotta, of Stuttgart. I have great hope that he will accept my works, since he has desired that they should be forwarded to him for examination. I have sent him the whole, and I feel very sure he will swallow the pill. My conditions would be the only cause of delay, but I hope he will agree to them. For the fresh-water fishes and the fossils together I have asked twenty thousand Swiss francs. Should he not consent to this, I shall apply to another publisher."

On the 3rd of April he received his degree of Doctor of Medicine. A day or two later he writes to his mother that her great desire for him is accomplished.

TO HIS MOTHER.