Evening Republican, Volume 15, Number 206, Rensselaer, Jasper County, 31 August 1911 — Life Rings on a Mountain. [ARTICLE]

Life Rings on a Mountain.

An extraordinary example of the way in which a mountain majr affords on a small scale an image of the earth’s climates, arranged in successively higher circles, has been found In the San Franciaco peaks These ancient volcanoes rise out of a plateau having a mean elevation of 7,000 feet above sea level. The peaks are encircled with zones of vegetation, which ran - almost like contour lines around them. Between 6,500 and 8,500 feet the yellow pine is the dominant tree. From 8,600 to 10,300 feet the Douglas fir, the silver fir, the cork fir, and the aspen share the available ground. Between 10,300 and 11,500 feet tbe Bln gelmann spruce and th- fox-tail- pine take possession, and ascent to the tree limit.—Scientific American. ■ S