192. That these degrees are homogeneous, that is, of the same character and nature, follows from what we have now said. The minute, larger and largest motor fibers of the muscles are homogeneous. The minute, larger and largest nerve fibers are homogeneous. Wood fibers from the minute to their composite are homogeneous. So, too, are the constituents of stones and metals of every kind. The organic substances which constitute the vessels and seats of thoughts and affections, from their simplest to the aggregated whole which forms the brain, are homogeneous. The atmospheres, from the pure ether to the air, are homogeneous. Degrees of heat and light in their succession according to the degrees of the atmospheres are homogeneous. And so also are degrees of love and wisdom homogeneous. Things which are not of the same character and nature are heterogeneous, and they do not accord with things that are homogeneous. Thus they cannot form discrete degrees in combination with them, but only in combination with their like, with things that are of the same character and nature with which they are homogeneous.