all dead; not yet decayed, however, and I could therefore preserve them in alcohol. The gills I have never seen, but I will watch to see whether they are turned inward. . . BRAUN TO AGASSIZ. CARLSRUHE, August 9, 1827. . . .This is to tell you that I have determined to leave Heidelberg in the autumn and set forth on a pilgrimage to Munich, and that I invite you to be my traveling companion. Judging by a circumstantial letter from Dollinger, the instruction in the natural sciences leaves nothing to be desired there. Add to this that the lectures are free, and the theatre open to students at twenty-four kreutzers. No lack of advantages and attractions, lodgings hardly more expensive than at Heidelberg, board equally cheap, beer plenty and good. Let all this persuade you. We shall hear Gruithuisen in popular astronomy, Schubert in general natural history, Martius in botany, Fuchs in mineralogy, Seiber in mathematics, Starke in physics, Oken in everything (he lectures in winter on the philosophy of nature, natural history, and physiology). The clinical instruction will be good. We shall soon be friends with all the professors. The library contains whatever is best in botany and zoology, and the collections open to the public are very rich. It is not known whether Schelling will lecture, but at all events certain of the courses will be of great advantage. Then little vacation trips to the Salzburg and Carinthian Alps are easily made from there! Write soon whether you will go and drink Bavarian beer and Schnapski with me, and write also when we are to see you in Heidelberg and Carlsruhe. Remind me then to tell you about the theory of the root and poles in plants. As soon as I have your answer we will bespeak our lodgings from Dollinger, who will attend to that for us. Shall we again house together in one room, or shall we have separate cells in one comb, namely, under the same roof? The latter has its advantages for grass-gatherers and stone-cutters like ourselves. . .Hammer away industriously at all sorts of rocks. I have collected at Auerbach, Weinheim, Wiesloch, etc. But before all else, observe carefully and often the wonderful structure of plants, those lovely children of the earth and sky. Ponder them with child-like mind, for children marvel at the phenomena of nature, while grown people often think themselves too wise to wonder, and yet they know little more than the children. But the thoughtful student recognizes the truth of the child's feeling, and with his knowledge of nature his wonder does but grow more and more. . . CHAPTER 2. 1827-1828: AGE 20-21. Arrival in Munich. Lectures. Relations with the Professors. Schelling, Martius, Oken, Dollinger. Relations with Fellow-Students. The Little Academy. Plans for Traveling. Advice from his Parents. Vacation Journey. Tri-Centennial Durer Festival at Nuremberg.