1838. This tissue must consist of firm or solid nervous granules, which have been serially co-arranged in lines or radii. Such organic lines are called _Fibres_. 1839. The fibrous is the third original tissue, which appears in the animal organization. 1840. The nerve acts upon the fibres as upon the bone, or as a Central upon a Peripheric, as the light upon the air. 1841. Thereby the soft fibre is polarized; the poles are mutually attracted and repelled, and motion of the fibres originates, their extremities approximating or withdrawing by virtue of the polarity. Contractile fibres are called _sarcose or fleshy fibres_. _Flesh._ 1842. The flesh is the median formation between nerve and bone. It is half nervous mass, therefore sentient, half bone, therefore moving. 1843. The essence of the motion resides in the muscle, not in the nerve. Such is the cause of motion, the muscle being the self-moving, the bone that which is moved. 1844. The flesh must surround the bone, as the air or water surrounds the earth. 1845. The flesh is a terrestrial substance, just as the bone is; the nerve is a cosmical substance, and on that account the mediator of everything. B. VEGETABLE TISSUES. 4. _Cellular Tissue._ 1846. There are three, and only three constituent forms essential to the animal substance, the point, the globe, and the line; equivalent to centre, periphery, and radius. 1847. Out of these three all other forms, of whatever kind, are developed, through degradation unto vegetable structure. This form can be none other than the _Cell-form_. In the animal there are therefore four fundamental forms, while in the vegetable only one occurs. 1848. The cellular form may be also called the water in the animal, the globe-form the earth, the fibrous the air, the point-form the fire. Thus is the animal even in its tissues a whole universe, for it cannot otherwise be thought of. 1849. The cellular substance is the last division of the point-substance, because the nervous granule becomes hollow. A true cellular tissue first makes its appearance therefore in the higher animals. 1850. Bone, flesh and nerve are the highest organs of the animal; the viscera, which mostly consist of cellular tissue, will indicate the Vegetative in the animal. Proper animal organs can only present the above-mentioned triplicity. What is not bone, flesh or nerve, is not animal, but vegetable. 1851. Nerve, flesh and bone are mutually excited, and are independent of the cellular tissue. They are moreover the animal in the animal, the thoroughly Free and Voluntary. 1852. These three substances have therefore nothing to do with the three terrestrial processes; they do not digest, respire, nourish nor transport about the galvanic sap, but live for themselves or to their own satisfaction.