190. All things which have existence in the world, of which threefold dimension is predicated, that is, which are called compounds, consist of degrees of height, that is, discrete degrees; as examples will make clear. It is known from ocular experience, that every muscle in the human body consists of minute fibers, and these put together into little bundles form larger fibers, called motor fibers, and groups of these form the compound called a muscle. It is the same with nerves; in these from minute fibers larger fibers are compacted, which appear as filaments, and these grouped together compose the nerve. The same is true of the rest of the combinations, bundlings and groupings out of which the organs and viscera are made up; for these are compositions of fibers and vessels variously put together according to like degrees. It is the same also with each and every thing of the vegetable and mineral kingdoms. In woods there are combinations of filaments in threefold order. In metals and stones there are groupings of parts, also in threefold order. From all this the nature of discrete degrees can be seen, namely, that one is from the other, and through the second there is a third which is called the composite; and that each degree is discreted from the others.