1029. The light-system is not capable of producing matter, like the terrestrial systems. This is self-evident. 1030. It does not polarize by effecting chemical changes. If nevertheless these are present, they are thus only results, occurring while the terrestrial processes are set in action by the process of light. 1031. Light polarizes the Material by mere fixation or discharging of poles, and thus in a spiritual manner. So also does the light-system of the organism. It governs the organism not by mechanical power, not by mass, but by a _spiritual breath or aura_. 1032. The organic light-system is the Animative of the organism. In it the spirit exercises its power over the mucous mass. It is the _nervous system_. LIFE OF THE NERVOUS SYSTEM. 1033. The light-polarity can bring about no other tension in the mass than that which is peculiar to it, and thus the galvanic tension, whose highest and purest phenomenon is motion. The light-system principally causes motion in the mass, like as in æther. 1034. The nervous system has, however, a life also in itself, or the _internal_ light-polarity that is without any relation to the organic mass. This action of the nerves is called _sensibility_, and its phenomenon, _feeling_ or _sensation_. The system of sensation is the nervous system as sun in itself; in the motor-system it is as sun in a centre of planets. 1035. The organism, like the elementary nature, is completed by four systems. 1. By the Nutrient, 2. " Digestive, 3. " Respiring, and 4. " Motive, unto which the nerves, muscles, and bones belong. 1036. It is impossible for more than these to be developed in an organism; impossible, for any thing else but what is in nature to originate therein; impossible, that any thing new be born by it. Everything in nature is only repetition of an Antecedent or something that has gone before. How could the organism be aught else, how aught else than the focus of the four elements! SECOND KINGDOM. VEGETABLE KINGDOM. 1037. The Vegetable Kingdom is the individual development of the three planetary elements. I.--_PHYTOGENY_. 1038. Phytogeny represents the developmental history of individual plants, or, properly speaking, the idea of the plant.