Wells That Supply Water Only During the Night

Wells That Supply Water Only During the Night

Everyone knows of plants that bloom at night, and of course, wells do not actually “bloom,” but a well that supplies water only at night is nevertheless a curiosity that has recently been attracting the attention of scientists in Australia. It has long been known that these socalled “night wells” were to he found in that country, hut only recently has anyone attempted a scientific explanation of why these wells are without water in the middle of the hot day and well filled with water during the night. These wells are to be found in the desert regions of Central Australia. They are natural wells for the most part. Travelers who come across these wells during the heat i the day generally rest until into the night if they and their horses are badlv in need of water, knowing that only at night can they quench their thirst. Then, as the day advances, the water slowly sinks hack into the ground and out of sight. At night, alter the sun has been down long enough for the ground to begin to cool, the water comes baek into the wells rather speedily, not as slowly as it receded. And as the water comes hack there is a peculiar whistling sound, made by the air, that seems to he forced out of the wells as the water comes in. For this reason many people call them “whistling wells.” A study of these wells has been made by Dr. Malcolm Maclaren. In regard to this peculiar geological formation (referring to the more numerous natural wells) he has shown that the water reaches the upper section through a long narrow passage that reaches through a fine stratum of gneiss into the earth. Dr. Maclaren is of the opinion that during the heat of the day this layer of earth, or gneiss, forming the narrow passage, swells, and, descending into the cavity, forms a depression into which the water collects. When it glows cool at night these layers contract and drive the water and air into the passage communicating with the well, the outrushing air making the whistling sound. But even Dr. Maclaren admits this is only a partially satisfactory explanation.

A new water ordinance proposed for Springfield, Mo , provides for three deep wells within 90 days; abandon rivers and surface streams; new standpipe near public square; double engine tire hydrants in business district; removal of old style fire hvdrants in residence district; meter rate for all lire hydrants with minimum meter charge; all water used in city to he paid for at meter rates; rates to he fixed hy public service commission.

EXAMINING THE WORKING PARTS OF COREY HYDRANT.TRUCK ATTACHED TO HYDRANT AT SAN FRANCISCO, BREAKING CHAIN.

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