Water-Supply: (Considered Principally From a Sanitary Standpoint.)
Water-Supply: (Considered Principally From a Sanitary Standpoint.)
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In our eReader you can find the full English version of the book. Read Water-Supply: (Considered Principally From a Sanitary Standpoint.) Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Water-Supply: (Considered Principally From a Sanitary Standpoint.)
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below surface 75 100 20 ft. " " 54 49 30 ft. " " 42.4 29.47 35 ft. " " 42 4.18 40 ft •* «« 42 o 47ft. " •' 413 O Digitized by Google STORED WATER. '• . ■ 26l LAKE COCHITUATE, BOSTON WATER-WORKS (AUG. 17, 1891).
Surface 74.7 79«i5 10 ft. below surface 66.4 83.69 20 ft. " " 53.6 35.86 30 ft. " " 49-3 21.33 40 ft. " " 48.2 20.93 45 ft. " " 48.2 1.65 50 ft- " " 45.7 o 57 ft. " ** (bottom)... 44.8 o Even though the bottom of a lake or reservoir be per- fectly clean and sandy, the dissolved oxygen mu...st surely diminish in the lower layers of water, for no water is without some oxidizable contents, but it will not be reduced to zero, nor will the water become damaged in quality.
Uniform experience goes to prove that good water may be preserved in properly constructed reservoirs without de- terioration for indefinite lengths of time. It must be re- membered, however, in this connection, that to keep a ground-water in good condition it is necessary to cover the reservoir. Such waters are usually charged with mineral matter suitable for plant-food, and the higher organisms will be very likely to grow therein unless light be excluded.
What to read after Water-Supply: (Considered Principally From a Sanitary Standpoint.)?
You can find similar books in the "Read Also" column, or choose other free books by Mason, William Pitt, 1853-1937 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
below surface 75 100 20 ft. " " 54 49 30 ft. " " 42.4 29.47 35 ft. " " 42 4.18 40 ft •* «« 42 o 47ft. " •' 413 O Digitized by Google STORED WATER. '• . ■ 26l LAKE COCHITUATE, BOSTON WATER-WORKS (AUG. 17, 1891).
Surface 74.7 79«i5 10 ft. below surface 66.4 83.69 20 ft. " " 53.6 35.86 30 ft. " " 49-3 21.33 40 ft. " " 48.2 20.93 45 ft. " " 48.2 1.65 50 ft- " " 45.7 o 57 ft. " ** (bottom)... 44.8 o Even though the bottom of a lake or reservoir be per- fectly clean and sandy, the dissolved oxygen mu...st surely diminish in the lower layers of water, for no water is without some oxidizable contents, but it will not be reduced to zero, nor will the water become damaged in quality.
Uniform experience goes to prove that good water may be preserved in properly constructed reservoirs without de- terioration for indefinite lengths of time. It must be re- membered, however, in this connection, that to keep a ground-water in good condition it is necessary to cover the reservoir. Such waters are usually charged with mineral matter suitable for plant-food, and the higher organisms will be very likely to grow therein unless light be excluded.
What to read after Water-Supply: (Considered Principally From a Sanitary Standpoint.)?
You can find similar books in the "Read Also" column, or choose other free books by Mason, William Pitt, 1853-1937 to read onlineMoreLess
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