The larger part of the unarranged, soft and homogenous primordial plasma, which grows by intussusception, becomes watery soma-plasm, with unarranged and easily movable micellae. The smaller part is converted in the course of phylogeny into idioplasm, in which at certain favorable points the micellae that are being stored up under the influence of molecular forces arrange themselves into groups by similar orientations, and hence form bodies of less water content and greater solidity. Each body of idioplasm consists originally of only one group of micellae, which, however, necessarily breaks up with increasing additions into several groups. On account of the dynamic influence of the groups of micellae upon their own growth, they become in part more distinct and more definitely separated, in part again differentiated by new irregular intussusception. This phylogenetic process is continued indefinitely, by which the combination of forces produces a new configuration, and conversely, by which a new configuration produces a new combination of forces, so that the body of idioplasm merely takes on a continually increasing complexity of configuration by the action of the internal forces--that is, by the molecular forces of the micellae of the albumen under the influence of which growth proceeds. This constitutes the _automatic perfecting process_ or progression of the idioplasm, and entropy of organic matter. (See p. 47.) The above described phylogenetic perfecting process of the idoplasm, which operates through internal causes, is scarcely affected by differences of nutrition and by climatic conditions influencing nutrition. On the other hand all those external forces which act as stimuli during a long period of time in an unvarying manner have a very noticeable influence on the intussusception of micellae in the idioplasm and on the molecular processes going on among the micellae. The action of stimuli determines the particular structure of the groups of micellae added under the direction of the perfecting process. Thus the configuration of the idioplasm becomes continually more and more complex and at the same time assumes a local adaptation corresponding to external conditions. This constitutes adaptation of the idioplasm. 6. FUNCTION OF THE IDIOPLASM IN GENERAL.