. Bulletin. Agriculture; Agriculture -- Arizona. Timely Hints for Farmers. 101 Rocks, near Tempe, was found by the chemists of the Station to contain excessive amounts of organic matter and ammonia, no less than 400 times as much nitrous nitrogen as is commonly con- sidered permissible in a drinking water. These substances are not poisonous in themselves, for both men and animals use and sometimes even prefer river water; but these impurities afford food for bacterial forms of life, some of which may cause Fig. 10, An adobe hole, or stock water tank, near Phoenix, Ariz. Especial
. Bulletin. Agriculture; Agriculture -- Arizona. Timely Hints for Farmers. 101 Rocks, near Tempe, was found by the chemists of the Station to contain excessive amounts of organic matter and ammonia, no less than 400 times as much nitrous nitrogen as is commonly con- sidered permissible in a drinking water. These substances are not poisonous in themselves, for both men and animals use and sometimes even prefer river water; but these impurities afford food for bacterial forms of life, some of which may cause Fig. 10, An adobe hole, or stock water tank, near Phoenix, Ariz. Especially in warm weather, where such water is allowed to stagnate in stock water tanks, these germs multiply enormously. Of course a certain disease germ may or may not be present, but such conditions invite and favor its development. There is ro question that the germs of hog-cholera and black-leg, both of which have caused serious losses in Salt River valley, are prop- agated in the stagnant water of these tanks. The doctors state, also, that the same cause is responsible for much disease and mor- tality among the farming Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Arizona. Agricultural Experiment Station. Tucson : Agricultural Experiment Station, University of Arizona
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