Jesuits’ college, which now contains them all, as well as the library, the lecture-rooms of the university, etc., but in a year or so all will be removed to very fine buildings the king is erecting for their reception. Excepting the Brazilian collections, which are large and good, there is nothing worth particular notice in the zoölogical and mineralogical cabinets; they make no great show after that of Vienna. The library is immense, this and the one at Paris being the two largest in the world; the books fill a great number of rooms, none of them magnificent but very convenient; the whole is soon to be transferred to other quarters. I was introduced to one of the librarians, who was at the moment showing the curiosities of the collection, very old and rich manuscripts,--the earliest attempts at wood-engraving, etc.,--to a party of English. When he had done with them I told him he must have been bored quite sufficiently for once, and that I would not trouble him any further just then, but that I wished to acquire some useful information about the plan and arrangement of the library, rather than to see its curiosities. So he fixed upon Friday morning, when he would be quite disengaged, and would gladly afford me all the information I desired. Shortly after dinner I went down to the Botanic Garden; found Martius, who, having an unexpected engagement, consigned me to the head gardener, and I was very kindly shown over the whole establishment, which is much larger and better than I had supposed, and in excellent condition. Afterwards I strolled about the town for an hour or two, heard the fine military band in the Hofgarten, and at half past six went to the house of Martius; saw his wife, who looks much younger than he, and I suspect he was not married until after his return from Brazil. She seems a very intelligent and pleasant lady, understands English pretty well, but does not speak it, while Martius speaks extremely well; the eldest daughter, a pretty girl of thirteen, speaks French fluently, has taken lessons in English, which she reads readily, but speaks slightly; there is another daughter of about ten, another still younger, and a boy a little more than a year old completes the list. Professor Zuccarini[108] was there, and afterwards an entomologist, whose name I forget, dropped in; also a young man from Rio Janeiro, a Dr. Hentz from Vienna, who inquired especially after Dr. Buck; the director of the music in the royal chapel here; and two ladies, one of whom sung exquisitely. The director and Dr. Hentz both played the piano to perfection, and, to crown all, Martius seized his fiddle, quite to my surprise, and played with great spirit. Before they were done a little crowd had began to assemble before the windows. So the evening passed off very pleasantly.