The book Natural History Studies was written by author J Arthur John Arthur Thomson Here you can read free online of Natural History Studies book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Natural History Studies a good or bad book?
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65 E NATURAL HISTORY STUDIES To keep a famous inland fish-pond from becoming barren, recourse was had to an interesting device. Some boxes of mud and manure were placed at the sides, yet so that none of the manure got into the water. Bacteria, the microscopic minions of all putrefaction, began to work in the mud and manure, making food for minute, but not quite so minute, animalcules called Infusorians, which mul- tiply so rapidly that there may be a million from one in a week's time. A living ...cataract of these Infu- sorians overflowed from box to pond, and " water- fleas, " which are really tiny Crustaceans about the size of pins' heads, gathered at the foot of the fall, devoured the animalcules, and multiplied exceed- ingly. But the water-fleas are eaten by fishes, so that the fishes were kept in good cheer. As fish- flesh is said to be good for the brain, we have traced the links of a chain connecting mud and clear thinking ! What was in the mud became part and parcel of the Infusorians, which became part of the Crustaceans, which became part of the fishes, which became part of the man.
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