The Sky That Moved
The sky over Plattsmouth went dark on a June afternoon in 1875 and stayed dark for five days. Dr. Albert L. Child stood under it with instruments. Child was the town physician and a volunteer weather observer for the Army Signal Service, a man in the habit of measuring things, and the swarm passing over his station gave him a problem he could work. The insects came without pause, hour after hour, a column of wings moving on the wind, and by his reading of the instruments the mass of them stood a mile high. He clocked the speed of the passage, wired the towns down the line for their own reports, and multiplied what he had. His arithmetic gave a single living body about 110 miles wide and some 1,800 miles long. The area came to 198,000 square miles, larger than California, and the figure entered the scientific record as the largest measurement ever made of one aggregation of animals. It still holds that rank.







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