. Evolution and animal life; an elementary discussion of facts, processes, laws and theories relating to the life and evolution of animals . FIG. 253.—A Geometrid larva on a branch.(The larva is the upper right-hand projectionfrom the twig.) 412 EVOLUTION AND ANIMAL LIFE or spanworms, are twiglike in appearance, and have the habit,when disturbed, of standing out stiffly from the twig or branchupon which they rest, so as to resemble in position as well asin color and markings a short or a broken twig. One of the.

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Keywords: ., bookauthorkelloggvernonlvernonl, bookcentury1900, bookdecade1900