Word: bacteria
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Dates: during 1920-1929
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...three minutes a motion picture camera played against a laboratory screen at Rochester, N. Y., last week. In the picture were what seemed to be animated sausages approximately one-fourth of an inch long and one-twelth of an inch in diameter. They unfolded, grew, multiplied. They were bacteria magnified 2,000 times and photographed in motion by an ordinary moving picture camera ingeniously fitted to an ordinary microscope...
...with it she told last week in Hygeia, Health Magazine: "Somewhat more curious than scrupulous, I opened it, and there lay the usual powder puff. No longer could I repress my bacteriologic instincts, and I carried the little puff to the laboratory, where I made a count of the bacteria attached...
...small puff into four equal parts, placed one part in a known amount of sterile water and let it remain for a short time to dislodge the bacteria. Then varying amounts of the water were carefully transferred to sterile glass plates with covers-petri dishes, we call them in the laboratory-and a proper amount of culture media, or food supply for bacteria, added...
...bacteria-say 'germs' if you prefer-finding suitable food, multiply and form groups, or colonies. Each colony represents the growth from one bacterium. These colonies were counted and by calculation the total number of germs clinging to the part of the powder puff used was obtained. This number multiplied by four of course gave the total count for the entire puff. It was 20,000. Twenty thousand bacteria clinging to a powder puff to be used on a clean face...
...last week at the farms of Donald Woodward, gentleman farmer of Le Roy, N. Y. Mr. Woodward had his fields plowed by a share charged with 103,000 volts of electricity. Inventor Hamilton L. Coe of Pittsburgh had told Mr. Woodward that the current would electrocute weeds, grubs, soil bacteria. Crops, he said, would spring from the volt-purged ground in record time and abundance...