On returning to Buffalo, I found the lake rapidly discharging its ice, which had been recently broken up by a storm of wind; and, while awaiting the motion of the steamer, I was joined by Captain D. B. Douglass, Professor of Engineering at West Point, who had been appointed topographer and astronomer of the expedition. We embarked on the 6th of May, at nine o'clock in the morning, in the steamer Walk-in-the-Water, an elegant and conveniently-planned vessel, with a low-pressure Fulton engine. This boat had been put upon the lake two years before, when it made a trip to Michilimackinac, and was, indeed, the initial boat in the history of steam navigation on the Lakes. We embarked at Black Rock, and it was necessary to use a tow-line, drawn by oxen on the shore, to enable the boat to ascend the Rapids. This Captain Rodgers, a gentlemanly man, facetiously termed his hornbreeze. The oxen were dismissed a short distance before reaching the mouth of Buffalo Creek, where we reached the level of Lake Erie, five hundred and sixty feet above the tide-waters of the Hudson River.[9] We were favored with clear weather, and, a part of the time, with a fair wind. The boat touched at Erie, at the mouth of Grand River, at Cleveland, and at Portland, in Sandusky Bay, on coming out of which we passed Cunningham Island, and the Put-in-Bay Islands, from a harbor in which Perry issued to achieve his memorable naval victory on the 10th of September, 1813. Passing through another group of islands, called the Three Sisters, we entered the mouth of the Detroit River late on the afternoon of the 8th, just as the light became dim and shadowy. The scale of these waters is magnificent. [9] Report of the New York Canal Commissioners. We had a glimpse of the town and fort of Malden, or Amherstburg, and of Boisblanc, and Gross Isle, which were the last objects distinctly seen in our ascent. The boat pushed on her way, under the guidance of good pilots, although the night was dark, and we reached our destination, and came to, at the city of Detroit, at twelve o'clock P. M., thus completing the passage in sixty-two hours. The next morning, an official from the Executive of the Michigan Territory came on board with inquiries respecting Captain Douglass and myself, and we soon found ourselves in a circle where we were received with marked respect and attention. It was pleasing to behold that this respect arose, in a great degree, from the high interest which was manifested, in all classes, for the objects of the expedition, and the influence which its exploratory labors were expected to have on the development of the resources and prosperity of the country at large.