As in its Mendelian phenomena of the Segregation of its Contrasting Traits, and the Dominance and Recessiveness of these in constitution and heredity, so, in its living organisation, the human body is extraordinarily and in a number of ways essentially plant-like. The brain and the nervous system may be regarded, indeed, as a highly-differentiated Cerebro-Nervous organism grafted upon a simpler Vital, and vegetative body, from which, as from a soil, it draws its life and energy: and from which, as age advances, it gradually withdraws the power of further sustaining its existence. This Cerebro-Nervous graft perishes only because the Vegetative body on which it is installed has come to the end of its power to sustain the life of the Nervous organism picketed upon it. The close resemblances in structure and in processes between the Cells of vegetable and animal organisms, when taken in conjunction with a number of other biological indications, justify the conclusion that living bodies are actually vegetative organisms to which have been super-added, by progressive evolutionary differentiations, faculties of Motion and of Consciousness. (Plants are recognised as possessing rudimentary consciousness. While Growth is a mode of Motion.) The trunk, which contains the respiratory, circulatory, nutritive and reproductive organs represents the Vitative, or Vegetative, system. The brain with its tributary spinal cord and spinal-nervous system represents the Sensori-motor organism. While the limbs are highly-differentiated implements which the Cerebro-Nervous organism has developed in the Vitative organism; to serve it with means of locomotion and of action, for the achievement of intelligent purpose. The lungs, with their ramifications of tubes and their air-cells, closely resemble the branches and leaves of a tree, which spread into and absorb from the atmosphere the oxygen whereby it lives. While the convoluted intestines are like the roots of a tree, absorbing nurture for it from environment. The Vegetative organism, being the agency of Life, is female in origin and inherence. The Cerebro-spinal organism, being the agency of Adaptation, is male in origin and inherence. In both, however, the inherences of the other sex are represented. The body resembles thus a bi-sexual plant, its root-stock being female and Recessive, with a male Dominant and differentiating organism incorporated in it. X _Vegetative body has its own brain and nervous system and its (involuntary) muscles_