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  • noun Plural form of plastidule.


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  • Haeckel, Ernst, 3, 285; on physical activity in the atom, 25, 26; his "living inorganics," 91; on the origin of life, 161; on inheritance and adaptation, 184; his "plastidules," 217;

    The Breath of Life

  • "The undulatory movement of the plastidules is the key to the mechanical explanation of all the essential phenomena of life.

    Evolution, Old & New Or, the Theories of Buffon, Dr. Erasmus Darwin and Lamarck, as compared with that of Charles Darwin

  • Like Darwin, in an effort to ac - count for supposed heritable effects of the environ - ment, they assumed the existence of “plastidules” or other living units that could be modified in various body parts, and were then transmitted through the reproductive cells to members of the next generation.


  • I concluded that "heredity is the memory of the plastidules, and variability their power of comprehension."

    Evolution in Modern Thought

  • I elaborated this far-reaching idea, and applied the physical principle of transmitted motion to the plastidules, or active molecules of plasm.

    Evolution in Modern Thought

  • Other names are given to the mystery -- the micellar strings of Naegeli, the biophores of Weismann, the plastidules of Haeckel; they all presuppose millions of molecules peculiarly arranged in the protoplasm.

    The Breath of Life

  • This is not inconsistent with our hypothetical ascription to the plastidules (or molecules of the plasson) of a complex molecular structure.

    The Evolution of Man — Volume 1

  • Like all the other functional-activities of the organic cells, these soul-functions depend ultimately on material phenomena of motion, and more particularly on the motions of the plasson-molecules or plastidules, the ultimate atoms of the protoplasma, and perhaps of the nucleus also; therefore we should be able actually to grasp and explain them, as well as every other cognisable natural process, if we were in a position to refer them to the mechanics of atoms.

    Freie wissenschaft und freie lehr. English

  • If we agree to call this active substance plasson, and its molecules plastidules, we may say that the individual physiological character of each of these cells is due to its molecular plastidule-movement.

    The Evolution of Man — Volume 1

  • To the sensitiveness of the movement of plastidules is due Variability -- to their unconscious Memory the power of Hereditary Transmission.

    Evolution, Old & New Or, the Theories of Buffon, Dr. Erasmus Darwin and Lamarck, as compared with that of Charles Darwin


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