"The Astronomical Observatory of Paris was founded on the establishment of the Academy of Sciences, in the reign of Louis XIV. The building was begun in 1667 and finished in 1672; like other observatories of that time, it was quite unfit for use. "John Dominie Cassini came to it before it was finished, saw its defects, and made alterations; but the whole building was afterwards abandoned. M. Leverrier showed me the transit instrument and the mural circle. He has, like Mr. Airy, made the transit instrument incapable of mechanical change for its corrections of error, so that it depends for accuracy upon its faults being known and corrected in the computations. "All the early observatories of Europe seem to have been built as temples to Urania, and not as working-chambers of science. The Royal Observatory at Greenwich, the Imperial Observatory of Paris, and the beautiful structure on Calton Hill, Edinboro', were at first wholly useless as observatories. That of Greenwich had no steadiness, while every pillar in the astronomical temple of Edinboro', though it may tell of the enlightenment of Greece, hides the light of the stars from the Scottish observer. Well might Struve say that 'An observatory should be simply a box to hold instruments.' "The Leverriers speak English about as well as I do French, and we had a very awkward time of it. M. Leverrier talked with me a little, and then talked wholly to one of the gentlemen present. Madame was very chatty. "Leverrier is very fine-looking; he is fair-haired full-faced, altogether very healthy-looking. His wife is really handsome, the children beautiful. I was glad that I could understand when Leverrier said to the children, 'If you make any more noise you go to bed.' "While I was there, a woman as old as I rushed in, in bonnet and shawl, and flew around the room, kissed madame, jumped the children about, and shook hands with monsieur; and there was a great amount of screaming and laughing, and all talked at once. As I could not understand a word, it seemed to me like a theatre. "I asked monsieur when I could see the observatory, and he answered, 'Whenever it suits your convenience.' "December 15. I went to Leverrier's again last evening by special invitation. Four gentlemen and three ladies received me, all standing and bowing without speaking. Monsieur was, however, more sociable than before, and shrieked out to me in French as though I were deaf. "The ladies were in blue dresses; a good deal of crinoline, deep flounces, high necks, very short, flowing sleeves, and short undersleeves; the dresses were brocade and the flounces much trimmed, madame's with white plush. "The room was cold, of course, having no carpet, and a wood fire in a very small fireplace. "The gentlemen continued standing or promenading, and taking snuff.