In the autumn of 1867 my family went to Wiesbaden, where my wife was to spend some time on account of her health, and I joined them there about Christmas time for a few weeks. Great changes had taken place in Germany since that dark December night in 1861 when I rushed through the country from the Belgian frontier to Hamburg on my way from Spain to America. The period of stupid reaction after the collapse of the revolutionary movements of 1848 was over. King Frederick William IV. of Prussia, who had been so deeply convinced and arduous an upholder of the divine right of kings, had died a helpless lunatic. King William I., afterwards Emperor William I., his brother and successor, also a believer in that divine right, but not to the extent of believing as well in the divine inspiration of kings--in other words, a man of good sense and capable of recognizing the superior ability of others--had found in Bismarck a minister of commanding genius. The sweeping victory of Prussia over Austria in 1866 had resulted in the establishment of the North German Confederacy under Prussian hegemony, which was considered a stepping-stone to the unification of all Germany as a constitutional empire. Several of the revolutionists of 1848 now sat in the Reichstag of the North German Confederacy, and one of the ablest of them, Lothar Bucher, was Bismarck's confidential counsellor. The nation was elated with hope, and there was a liberal wind blowing even in the sphere of the government. I did not doubt that under these circumstances I might venture into Germany without danger of being seriously molested; yet, as my personal case was technically not covered by any of the several amnesties which had been proclaimed in Prussia from time to time, I thought that some subordinate officer, either construing his duty with the strictness of a thorough Prussian, or wishing to distinguish himself by a conspicuous display of official watchfulness, might give me annoyance. I did not, indeed, entertain the slightest apprehension as to my safety, but I might have become involved in sensational proceedings, which would have been extremely distasteful to me, as well as unwelcome to the government. I therefore wrote to Mr. George Bancroft, the American Minister at Berlin, requesting him if possible to inform himself privately whether the Prussian government had any objection to my visiting Germany for a few weeks, and to let me have his answer at Bremerhaven upon the arrival there of the steamer on which I had taken passage. My intention was, in case the answer were unfavorable, to sail at once from Bremen to England and to meet my family there. Mr. Bancroft very kindly complied with my request, and assured me in his letter which I found at Bremerhaven that the Prussian government not only had no objection to my visiting Germany, but that I should be welcome.