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THOMPSON'S COAST PILOT, 121 is about three feet. The phenomena occurred at noon; the day was calm but cloudy ; the water retired suddenly, leaving the bed of the river bare, except for the distance of about twenty rods where the channel is deepest, and remained so for the space of an hour. Persons went out and caught fish in the pools formed in the rocky cavities. The return of the waters was sudden, and presented a sub- lime spectacle. 'They came down like an immense surge, roaring and foaming, and those who had incautiously wandered into the river bed, had barely time to escape being overwhelmed."' Rising and Falling of the Waters of Lake Michigan. One of those singular oscillations in the lakes, or " Inland Seas,"' which have been observed occasionally from the time of the explor- ation of the Jesuit Fathers, was witnessed recently in Lake Michi- gan. <A variety of signs, such as the mirage of the distant shore, unusual depression of the barometer, and a sudden rise of the tem- perature from a cool, bracing air, to a sultry heat, indicated an un- usual commotion in the atmosphericelements. About eleven o'clock A.M, when our attention was first called to the phenomena, the waters of the lake had risen about thirty-one inches above the ordin- ary level, and in the course of half an hour they again receded. Throughout the whole day they continued to ebb and flow at inter- vals of fifteen or twenty minutes, and the current between the outer and inner breakwater, near the Illinois Central Railroad House, was | so great at times that a row-boat made little or no headway against it. The extreme variation between high and low water was nearly three feet. The wind all day was off shore (from the southwest,) the effect of which was to keep down the waters instead of accumulating them at this point. About eight o'clock in the evening it veered suddenly to the northwest, and blew a violent gale, accompanied by vivid electrical displays. 'This morning (Monday) we hear of tele- graphic lines being prostrated, of persons killed by lightning, etc., while the lake, although agitated, exhibits none of the pulsations of : yesterday. , | 16