Mind, consciousness, may then be portrayed as an ocean comprised of mobile current layers, complexes built up around the awareness of different intravisceral pressures. A shifting hierarchy of such pressures form the points of focusing of consciousness that result in conduct. Behaviour may be defined as the resultant of the organism's pressure against the environment's counter pressure until there is a sufficient reduction of the specifically exciting intravisceral pressure. Just as water flows to its own level, so will conduct flow to reduce intravisceral pressure to its own level. A physics of the soul comes into prospect, in which a mathematical analysis will state the process quantitatively in terms of some common unit of pressure. Not only conduct, but also character, because it is past conduct repeated, associated, and fixed, will be so statable. For intravisceral tonus or pressure is not simply or only an acute or passing affair. There is for it a persistent or average figure, the so-called normal for it, below which or above which the acute situation will bring it. _Character_ is a _matter then of standards in the vegetative system_. Character, indeed, is an alloy of the different standard intravisceral pressures of the organism, a fusion created by the resistance or counter pressure of the obstacles in the environment. Character, in short, is the grand intravisceral barometer of a personality. Thus the comfortable, healthy, happy, well-balanced, progressive, constructive, virile personality is one in whom there is a continuously harmonious reduction of the intravisceral pressures in the environment called society. For in a gregarious creature, like man, fellow beings are the most powerful determinants of negative and positive vegetative pressures. Not so well rounded are other types existing because of inferiorities or excesses of the standard visceral tone. There is, for instance, the sexually cold type, comfortable by creating for itself an anaphrodisiac environment composed of pressures that can be fitted into its own. Or there may be an insufficiency of standard pressure in the alimentary tract, and we have the ascetic, mal-nourished, striving, uplifting type. Different types will be made by the permutations and combinations of factors that determine the intravisceral pressure and the environmental, i.e., social resistances or counter pressures. INTERNAL SECRETIONS DETERMINANTS OF VEGETATIVE PRESSURES