And the glad mother writes back: "I cannot thank you enough, my dear Louis, for the happiness you have given me in completing your medical examinations, and thus securing to yourself a career as safe as it is honorable.... You have for my sake gone through a long and arduous task; were it in my power I would gladly reward you, but I cannot even say that I love you the more for it, because that is impossible. My anxious solicitude for your future is a proof of my ardent affection for you; only one thing was wanting to make me the happiest of mothers, and this, my Louis, you have just given me." Agassiz had taken the degree of Doctor of Philosophy, a year earlier. "The time had come," said he, years afterward, "when even the small allowance I received from borrowed capital must cease. I was now twenty-four years of age. I was Doctor of Philosophy and Medicine, and author of a quarto volume on the fishes of Brazil. I had travelled on foot all over Southern Germany, visited Vienna, and explored extensive tracts of the Alps. I knew every animal, living and fossil, in the museums of Munich, Stuttgart, Tübingen, Erlangen, Wurzburg, Carlsruhe, and Frankfort; but my prospects were as dark as ever, and I saw no hope of making my way in the world, except by the practical pursuit of my profession as physician." December 4, 1830, Agassiz said good-by to Munich, and started with Mr. Dinkel, his artist, for Concise, his father having moved there from Orbe. Here he remained a year, arranging, meantime, his own valuable collections in natural history, at the house of his grandfather Mayor, at Cudrefin, on Lake Neuchâtel, and practising a little in medicine, in the neighboring villages. He longed to go to Paris for study, but poverty was his constant companion. Finally, an old friend of his father, a Swiss clergyman, M. Christinot, having come into possession of a small amount of money, urged his young friend to take it. His uncle also contributed a little, and Agassiz and Dinkel left for Paris in September, 1831. On their arrival they found inexpensive lodgings, and at once began to work in the museums. He writes to his sister Olympe: "M. Cuvier and M. Humboldt especially treat me on all occasions as an equal, and facilitate for me the use of the scientific collections so that I can work here as if I were at home.... In the morning I follow the chemical courses at the Pitié.... At ten o'clock, or perhaps at eleven, I breakfast, and then go to the Museum of Natural History, where I stay till dark. Between five and six I dine, and after that turn to such medical studies as do not require daylight.... On Saturday only, I spend the evening at M. Cuvier's."