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Show Lowly Spiders Among Swiftest of the Swift During an experiment some time ago a spider was timed to walk a hundred times its own length in a second. By comparison compari-son a man would have to travel at 400 miles an hour to equal this I Some birds, especially the diving div-ing varieties, can touch terrific speeds. The average speed a man reaches when diving from a height of about 60 feet is 40 miles an hour, whereas the loon, a, diving bird, surprised by the flash of a gun, can dive before the shot reaches it. One naturalist stated that he had timed birds to dive under water before the pellets from a gun peppered the surface. |