have already sent him collections, and promises duplicates from the Paris Museum to those who will send him more. He names the countries also from which he has received contributions, and regrets that he has nothing from Bavaria. Now I possess several specimens of all the native species, and have even discovered some ten not hitherto known to occur here, beside one completely new to science, which I have named Cyprinus uranoscopus on account of the position of the eyes, placed on the top instead of the sides of the head,--otherwise very like the gudgeon. I have therefore thought I could not better launch myself in the scientific world than by sending Cuvier my fishes with the observations I have made on their natural history. To these I should like to add such rare Swiss species as you can procure for me. So do not fail. FROM HIS BROTHER. NEUCHATEL, August 25, 1828. . . .I received in good time, and with infinite delight, your pleasant letter of July 27th. Its mysteries have however been unveiled by Dr. Schinz, who came to the meeting of the Natural History Society in Lausanne, where he met papa and my uncle, to whom he pronounced the most solemn eulogiums on their son and nephew, telling them at the same time what was chiefly occupying you now. I congratulate you, my dear brother, but I confess that among us all I am the least surprised, for my presentiments about you outrun all this, and I hope soon to see them realized. In all frankness I can assure you that the stoutest antagonists of your natural history schemes begin to come over to your side. Among them is my uncle here, who never speaks of you now but with enthusiasm. What more can be said? I gave him your letter to read, and since then he has asked me a dozen times at least if I had not forgotten to forward the remittance you asked for, saying that I must not delay it. The truth is, I have deferred writing till the last moment, because I have not succeeded in getting your fishes, and have always been hoping that I might be able to fulfill your commission. I busied myself on your behalf with all the zeal and industry of which I was capable, but quite in vain. The devil seemed to be in it. The season of Bondelles was over two months ago, and there are none to be seen; as to trout, I don't believe one has been eaten in the whole town for six weeks. I am forever at the heels of the fishermen, promising them double and treble the value of the fish I want, but they all tell me they catch nothing except pike. I have been to Cudrefin for lampreys, but found nothing. Rodolphe* (* An experienced old boatman.) has been paddling in the brook every day without success. I went to Sauge, --no eels, no anything but perch and a few little cat-fish. Two mortal Sundays did I spend, rod in hand, trying to catch bream, chubs, etc. I did get a few, but they were not worth sending. Now it is all over for this year, and we may as well put on mourning