...test degree of cold at the former post is 50 below zero, and at the latter 37 below zero. In not far from the same latitude, in the region of the lakes and at a similar altitude, at Forts Brady and Howard , in Michigan, the range is scarcely less. At Fort Wilkins, on Lake Superior, which is almost surrounded by water, the degree of cold is only 9 below zero. In Washington Territory, at Fort Stelaco...