Oi-o-gue, the name given by the Mohawks to Father Jogues in 1646, at Lake George, to what we now fondly call Hudson's River, is fully explained in another connection. The stream has its sources among the highest peaks of the Adirondacks, the most quoted springlet being that in what is known as "Adirondack or Indian Pass," a deep and rugged gorge between the steep slopes of Mt. Mclntyre and the cliffs of Wallface Mountain, in Essex County. The level of this gorge is 2,937 feet above tide. [FN-1] The highest lakelet-head sources, however, are noted in Verplanck Colvin's survey of the Adirondack region as Lake Moss and Lake Tear-of-the-clouds on Mount Marcy, [FN-2] the former having an elevation of 4,312 feet above sea-level and the latter 4,326 feet, "the loftiest water-mirror of the stars" in the State. The little streams descending from these lakes, gathering strength from other small lakes and springlets, flow rapidly into Warren County, where they receive the Sacondaga and Schroon. Between Warrensburgh and Glen's Falls the stream sweeps, in tortuous course with a wealth of rapids, eastward among the lofty hills of the Luzerne [FN-3] range of mountains, and at Glen's Falls descends about sixty feet, passing over a precipice, in cataract, in flood seasons, about nine hundred feet long, and then separates into three channels by rocks piled in confusion. In times of low water there is, on the south side of the gorge, a perpendicular descent of about forty feet. Below, the channels unite and in one deep stream flow on gently between the grained cliffs of fine black marble, which rises in some places from thirty to seventy feet. At the foot of the fall the current is divided by a small island which is said to bear on its flat rock surface a petrifaction having the appearance of a big snake, which may have been regarded by the Mohawks with awe as the personification of the spirit of evil, according to the Huron legend, "_Onniare jotohatienn tiotkon,_ The demon takes the figure of a snake." (Bruyas.) Under the rock is a cave over which the serpent lies as a keeper, extending from one channel to the other and which, as well as the snake, comes down to us embalmed in Cooper's "Last of the Mohegans," though some visitors with clear heads have failed to discover the snake. In times of flood the cave is filled with water and all the dividing rocks below the fall are covered, presenting one vast foaming sheet.