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Tully Monster.
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Compare the size of ancient corn cob with modern-day corn.
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Photoelectric relay made at Yerkes Observatory, Williams Bay, Wisconsin, with the cooperation of the General Electric Co., and photoelectric cells by R. J. Cashman and W. S. Huxford, 1933. Courtesy of the Adler Planetarium.
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Field guide to common birds: Top row l to r: American goldfinch, brown thrasher, downy woodpecker, gray catbird. Center row: blue jay, Carolina wren, house wren, baltimore oriole. Bottom row: Great crested flyatcher, northern cardinal, American robin, song sparrow.
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