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In his new volume on "The Power of Movement in Plants," Mr. Darwin, with the assistance of his son, Mr. Francis Darwin, has added yet another to the long list of works in which the theories of nature for ever associated with his name are further exemplified and traced through novel and interesting development. In a previous work he has explained and illustrated by abundant records of his experiments and observations, the movements and habits of climbing plants. The object of the present treatise is more particularly to describe and connect together several large classes of movements common to all plants.