. . .Last autumn, when I had the pleasure of meeting you in Carlsruhe, I proposed to you to give some lectures on Natural History at this university. Professor Leuckart, who till now represented zoology here, is called to Freiburg, and you would therefore be the only teacher in that department. The university being so frequented, a numerous audience may be counted upon. The zoological collection, by no means an insignificant one, is open to your use. Professor Leuckart received a salary of five hundred florins. This is now unappropriated, and I do not doubt that the government, conformably to the proposition of the medical faculty, would give you the appointment on the same terms. By your knowledge you are prepared for the work of an able academical teacher. My advice is, therefore, that you should not bind yourself to any lyceum or gymnasium, as a permanent position; such a place would not suit a cultivated scientific man, nor does it offer a field for an accomplished scholar. Consider carefully, therefore, a question which concerns the efficiency of your life, and give me the result of your deliberation as soon as possible. Should it be favorable to the acceptance of my proposition, I hope you will find yourself here at Easter as full professor, with a salary of five hundred florins, and a fitting field of activity for your knowledge. The fees for lectures and literary work might bring you in an additional fifteen hundred gulden yearly. If you accede to this offer send me your inaugural dissertation, and make me acquainted with your literary work, that I may take the necessary steps with the Curatorio. Consider this proposition as a proof of my high appreciation of your literary efforts and of my regard for you personally. Agassiz's next letter to Humboldt is to consult him with respect to the call from Heidelberg, while it is also full of pleasure at the warm welcome extended to him in Neuchatel. AGASSIZ TO HUMBOLDT. December, 1832. . . .At last I am in Neuchatel, having, indeed, begun my lectures some weeks ago. I have been received in a way I could never have anticipated, and which can only be due to your good-will on my behalf and your friendly recommendation. You have my warmest thanks for the trouble you have taken about me, and for your continued sympathy. Let me show you by my work in the years to come, rather than by words, that I am in earnest about science, and that my spirit is not irresponsive to a noble encouragement such as you have given me.