MICHIGAN. Steamboat travelling upon the western Lakes--The waters of Huron--Saginaw Bay--The stormy night--The beautiful St. Clair--Detroit--Bishop of Michigan--Ypsilanti--Ann Arbour--Ore Creek--Bewildered at night in the woods--Rescue--Meeting of friends--Log cabin. _Detroit, July 23d._ We parted with the friend we met at Mackinaw in the night. The two steamers rode off in two opposite directions. Our course, which from Chicago had been to the north, now became southward. There is something exceedingly novel in steamboat travelling upon the great western rivers. But the navigation of the lakes by steam presents scenes to the eye, and furnishes material for the imagination, far more grand, and striking, and magnificent. These lakes are indeed great inland seas. The wind and the storm have mighty power over them. But the well-directed steamer rides proudly over their agitated surface with all her precious cargo of life, and holds steadily on her way to the destined port in despite of wind and waves. This, however, is not always the case. The wind at times blows so fierce and furious that the vessel is driven back some fifty or ninety miles in her course. When a storm occurs with great and unwonted violence upon these lakes, especially upon Huron and Michigan, where there are very few safe harbours, the expedient adopted is to keep the boat at sea, and let her drive before the gale. We saw, but in one single instance, these waters putting on a wrathful appearance. During the greater part of our voyage, they lay beneath our steamer that swept over them in smooth and placid tranquillity. There is something in the very appearance of the waters of these lakes to wake up poetic conception. They have a sandy or pebbly bottom, which appears white as chalk, while every rippling wave as well as the whole mass of waters that roll beneath you, though so pure and transparent that a silver dollar might be distinctly seen at the depth of thirty feet, everywhere assumes the colour of deep emerald green. The day after we left Mackinaw, while passing Saginaw Bay, every vestige of land faded from our sight, and we saw nothing around us but one wide world of waters. As the close of the day drew on, the hitherto bright sunny heavens became covered with dark menacing clouds. A wind sprang up, and the waters of Huron, that had previously slept with the tranquillity and hushed slumbers of an infant, suddenly woke to the fierceness and fury of an enraged giant. I plainly saw what an aspect that lake could put on in a storm!