Crossing the Isthmus towards the close of May, 1854, she sailed for New Orleans. Thence she ascended the majestic but muddy Mississippi to Napoleon, and the Arkansas to Fort Smith. A severe attack of fever detained her for several days. On recovering her strength she travelled to St. Louis, the Falls of St. Anthony, Chicago--which was then beginning to justify its claim to the title of "Queen of the West"--and the vast inland seas of Lakes Superior, Michigan, Erie, and Ontario. After a rapid visit to Canada, she recrossed the frontier of the United States; and from Boston proceeded to New York and other great cities, and then undertook the voyage to England, where she arrived on the 21st of November, 1854. The narrative of her adventures was published in 1856, under the title of "My Second Journey Round the World." [Illustration: CAPE OF GOOD HOPE.] It might have been supposed that, at the age of fifty-nine, this female Odysseus would have rested content with her world-wanderings, and spent the few remaining years of life in peace; but her restless spirit could not endure inaction. There is something in the nature of travel to stimulate rather than satisfy the appetite, and it does not seem that any who have once entered on the vocation are able or willing to withdraw themselves from it. The charm of perpetual motion is upon them, as upon that unfortunate Jew, who, bending beneath the weight of eighteen hundred years, is still supposed to be roaming over the face of the earth. On the 21st of May, 1856, she once more took up her pilgrim's staff. Her first visits were made to the great cities of Western Europe--Berlin, Amsterdam, Leyden, Rotterdam, Paris, and London. In each the scientific world received her with open arms. At Paris she was specially honoured by the _Societe de Geographie_. At a public reception she was addressed by the president, de Jomard, who, after briefly enumerating her titles to distinction, said:--"Madame, in your favour we design to commit an irregularity of which our Society is proud: we name you an honorary member by the side of your country-men, Humboldt and Karl Ritter;" and recalling a famous saying, he added, "Nothing is wanting to your glory, madame, but you are wanting to ours." She now undertook--what to her was merely a brief holiday-trip--the voyage to the Cape of Good Hope. There she hesitated for a while in what direction she should turn her adventurous steps before she pushed forward to the goal on which she had fixed her aims--Madagascar. At length she decided on a visit to the Mauritius.