CHAPTER 3.
Reading edition
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.