MY DEAR DAD,--Don't allow yourself to be shocked with surprise on reading the above date till you hear the reasons which have brought me here at this singular season. They are grounded in the increasing wear and tear of my life in Berlin, and in my growing impatience to get well enough to be able to do some work in the summer.... I find myself getting more interested in physiology and nourishing a hope that I _may_ be able to make its study (and perhaps its teaching) my profession; and, joining the thought that if I came to Teplitz now for three weeks I could have still another turn at it, if necessary, in April,--before the summer semester at Heidelberg began,--to the consciousness that in my present condition I was doing worse than wasting time at Berlin, I took advantage of a fine sunshiny morning four days ago, packed my trunk, said good-bye to T. S. Perry, and took the railroad for this place. I hope you won't think from seeing me back here that my loudly trumpeted improvement in the autumn was fallacious. On the contrary, I feel more than ever, now that I am back in presence of my old measures of strength (distances, etc.), how substantial that improvement was--only it has not yet bridged the way up to complete soundness. I have been feeling for a month past that I ought to come here, but an effeminate shrinking from loneliness and so forth, and the inhuman blackness of the weather kept me from it. Now that I am here, I am only sorry I deferred it so long. I found the _Fürstenbad_ open, and with four other "cure-guests" in it. All its varletry, male and female, fat as wood-chucks from their winter's repose; a theatre (!) going in town three times a week; the head waiter of the restaurant where in the summer I used, for the price of a glass of milk, to read the "Times" and the "Independence Belge," no longer wearing the pallid look of stern and desperate _business_ with which he used to scud around among the crowded tables, and which used to make me stand in mortal fear of him, but appearing as a comfortable and red-cheeked human being with even greater conversational gifts than usual; every one moreover glad to see me, etc., etc. The veil of winter has been lifted for a week and the buried spring [has] peeped out and taken a-breathing before her time. Today everything is a-dripping, the earth has a moving smell, and the sky is full of spots of melting blue. If such weather but lasts, the time will pass here very quickly. I have brought a lot of good books, and if their interest wanes have the whole circulating library to fall back on. So much for Teplitz.