1819. The nervous tissue alone cannot constitute the animal substance concerned in all functions, but it must with further development pass over into another. As the æther-mass cannot concentrate itself into the sun without, from the antagonism with the refraction of light, condensing into planets, so also a central mass cannot subsist in an animal, without converting itself on the periphery into one that is planetary or terrestrial. 1820. The antagonistic mass, originating in a peripheral relation in the nervous mass, will surround the residue of the latter like a cyst or cyst, just like the planetary masses, or the colours, have primordially surrounded the sun as great hollow globes. The aggregate and purer nervous mass becomes thus directly the central mass of the animal--the _brain_. 1821. The limitary mass originates through oxygenation. Thus the colours originate; they are an oxygenated light. Thus has every terrestrial mass originated through combustion. The planets are suns that have undergone combustion; the limitary mass is nervous mass similarly treated and deoxydized. 1822. As having been already subjected to combustion, it therefore becomes polarizable, and consequently susceptible of sensation in the least degree. The limitary mass must be rigid or fixed; for it has indeed originated through fixation of the poles, or through the strongest oxydation. The limitary mass is the most rigid in the whole animal; for it is the primary antagonism with the nervous mass, the ultimate planetary matter, which is characterized by immoveability of the atoms. 1823. The limitary mass must be typical of the earth-element, this being the most rigid, and the end of the oxydation. The limitary mass is the animal earth-mass, just as the median mass is the animal æther- or fire-mass. 1824. The texture of the animal earth-mass must be that of a crystal, but of a round globular crystal; for it is organic mass, and can consequently have been only deposited as vesicle; it is, however, earthy mass, so that the whole vesicle must be, with all its contents, rigidified. Now, the rigidified substance of a vesicle is a globe--the texture of the mass which is opposed to that of the nerves is consequently the globular form. _Osseous Mass._ 1825. The rigidified limitary mass, which exhibits histologically dense globes, consists of earthy substance, and surrounds the nervous mass, is _osseous mass_. The osseous or bony texture is a solid globe or rigidified vesicle, being thus ambitus or boundary, as well as complexus or contents. 1826. Bone can only originate through oxydation of the animal mucous or nervous mass, whereby it is converted into a vesicular form. These vesicles are, however, by virtue of the highest oxydation, which must necessarily enter into antagonism with the highest central organ, converted wholly and thoroughly into rigid substance or earth, which is the maximum of the oxydation or fixation of æther.