Why Does Man Exist ? : the Continuation And Conclusion of Whence Comes Man ?
The book Why Does Man Exist ? : the Continuation And Conclusion of Whence Comes Man ? was written by author White, Andrew Dickson, 1832-1918. Fmo Here you can read free online of Why Does Man Exist ? : the Continuation And Conclusion of Whence Comes Man ? book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Why Does Man Exist ? : the Continuation And Conclusion of Whence Comes Man ? a good or bad book?
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If a minute insect alights with its delicate feet on the glands of Drosera, it is caught by 8 114 IDENTITIES OF ANIMAL AND VEGETABLE ACTION. [CHAP. the viscid secretion, and the slight, though prolonged pressure gives notice of the presence of prey, which is secured by the slow bending of the tentacles. On the other hand, the sensitive filaments of Dionoea are not viscid, and the capture of insects can only be assured by their sensitive- ness to a momentary touch, followed by the rapid closing ...of the lobes. So that in these two plants the power of discriminating between these two kinds of stimuli has been developed to an equally astonishing extent, but in opposite directions.^ " But we find definite evidence of this power of ' discri- minative selection ' even lower down in the scale of life than the cellular plants ; we find it even among the proto- plasmic organisms. Thus, to quote an instructive case from Dr. Carpenter : — " ' The deep-sea researches in which I have recently been engaged have not " exercised " my mind on any topic so much as on the following ; — Certain minute particles of living jelly, having no visible differentiation of organs, .
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