The unarranged micellae of the albumen of the spontaneously generated plasma are as yet in no way superior to the unorganized condition from which they have arisen, except in this that under the influence of their molecular forces the formation of similar new albumen micellae follows more easily. But as by the further action of molecular forces idioplasmic bodies are formed with groups of smilarly oriented micellae, the molecular forces of these micellae amount by summation to molar forces and thereby new chemical processes are introduced; plastic products are formed from plasmic and non-plasmic materials, and molar movements are introduced. And since idioplasmic bodies are formed under the influence of external stimuli, their plastic products always appear with a definite character of adaptation to environment. Then, as the idioplasmic body becomes continually more complex in the further course of phylogeny, and consists of a greater number of groups of micellae differing from each other, the organisms become more complex and differentiate into a greater number of parts, because each group of micellae of the idioplasm produces its specific effect with regard to inner structure, outer form, and function. 7. DETERMINANTS: THEIR ORIGIN AND DISAPPEARANCE. Since a particular cluster or group of micellae of the idioplasm produces a particular phenomenon in the organism, the former is designated as the determinant (_Anlage_, see p. 49) of the latter. Thus the organism must contain at least as many determinants in its idioplasm as there are different phenomena in its inheritable ontogeny; and if new phenomena appear in it, new clusters of micellae must previously have been introduced into the idioplasm, or the orientation and arrangement of clusters already present must have been changed. The formation of such a determinant, whether it concerns the perfecting of the organism or its adaptation to environment, always proceeds very slowly, and as a rule has no effect before its completion. Hence along with perfected determinants the idioplasm always contains growing and incomplete determinants.