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| Page vi | ||
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The picture on the
back cover shows the equipment at a typical cooperative station of the Weather
Bureau, in this case at Lincoln, Kansas. The white box shelter with the louvered sides, set on four posts, shelters two standard thermometers one of which, the maximum, registers the highest temperature of a 24-hour period, and the other, the minimum, registers the lowest 24-hour temperature. The shelter is especially designed to permit free circulation of the air and to prevent the readings of the thermometers from being affected by direct radiation. The rain gage, shown
at the right of the shelter, is a metal cylinder 8 inches in diameter and 24
inches high with a funnel-shaped receiver at the top that causes rain to be
collected in a brass tube with a cross section one tenth that of the 8-inch
can. This has the effect of magnifying the catch ten fold and permits of more
accurate measurements. The concrete support firmly holds the gage upright. There are 86
cooperative stations similar to this in Kansas and approximately 100 others
equipped with rain gages only where public-spirited citizens serve without pay
in keeping daily weather records of their respective communities. Many of these
serve from 30 to 40 years, or more. Compilations of data, such as appear in
this bulletin, would not be possible without the records of these numerous
cooperative stations. |
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