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Show MARK ADAPTABILITY OF MAN i . Automobile, Airplane, and Submarine Prove Hit, Right to . Rule Over the Natural Kingdom. In the competition for survival, leaf-enting leaf-enting insects must be green, like their prey, or perish; woodpeckers, like the bark; the tiger, striped like sunshine through the rushes. The fittest survive. "A black sheep" is more than a figure of speech. The struggle for existence demands his murder in the flock of white, conspicuous conspic-uous in contrast. Adaptation or death. The crafty little chameleon is the prince of color adapters. Faculties used, are sharpened; if neglected, they waste away into vestigia ves-tigia the appendix in man. Eyes of moles and burrowers are slo-wly closed wiith skin and fur. The fluffy little lap dog has weak eyes. But cavern cav-ern toads, with eyesight almost gone, will recover dim perception in slowly graduated light. And night-prowling cats improve their sight to penetrate shadow land. Man noticed the pupils of his eyes contract In sunshine, and enlarge In darkness saw the bat, and understood. On all sides he saw this principle at work: Bears, fur coated, restricted restrict-ed to the cold ; the dolphin, In the sea ; the eagle, the bird of freedom, alert always to escape In flight. He therefore devised the automobile, the airplane and the submarine, to jump from mountain top to ocean bottom. This adaptability of his body of diversified di-versified surroundings has made him monarch of the natural kingdom. |