THE BLUE that the anemometer spin- HILL OBSERVATORY. dle is always vertical, irre- Kite flying has ceased to be monopolized by the spective of the blowing backward of the instru- small boy and is now used ment by the wind. very largely for meteoro- logical work. The govern- The complete instru- me… … The first kite is a large one, each mile of length and breaks at 300 pounds having at least 70 square strain. will not exceed 160 pounds. Stops of three to ten the main linea special aluminum cast clamp is used. The windlass employed since February, 1897, is a ininutes are made when 300, 600,…
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![An illustration from History of Arkansas Valley, Colorado. [By W. B. Vickers and others.] Illustrated (1881)](https://img.insideoutlibrary.com/img/200/bl-bl_000113404_0-979-1.webp)
