What May Happen if Small Boys Play Leap-Frog Too Much in the Spring
Human Development, Evolution, Animal Behaviour
Shows pairs of boys leap-frogging over each other in a circle. Moving clockwise, however, the pairs of boys increasingly resemble frogs leaping over each other, the final pair having been completely transformed.
© Science in the Nineteenth-Century Periodical Project, Universities of Leeds and Sheffield, 2005 - 2020
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