it very small magnitude for the real starting point, it will give us a mathematical science from a natural base where _correct_ formulas will be also true formulas and will correspond to psychological truths. We have found that man is an exponential function where time enters as an exponent. If we compare the formula for organic growth _y==e__kt_, with the formula “_P R__T_,” we see that they are of the same type and the _law of organic growth_ applies to the human _time-binding energy_. We see, too, that the time-binding energy is also “_alive_” and multiplying in larger and larger families. The formula for the decomposing of radium is the same—only the exponent is negative instead of positive. This fact is indeed very curious and suggestive. Procreation, the organic growth, is also some function of time. I call “time-linking” for the sake of difference. Whether the energy of procreation or that of “time-linking” can be accounted for in units of chemical energy taken up in food, I do not know. Not so with the mind—this “time-binding,” higher exponential energy, “able to direct basic powers.” If we analyse this energy, free from any speculation, we will find that this higher energy which is somehow directly connected with “time”—no matter what time is—is able to _produce_, by transformation or by drawing on other sources of energy, new energies unknown to nature. Thus the solar energy transformed into coal is, for instance, transformed into the energy of the drive of a piston, or the rotary energy in a steam engine, and so on. It is obvious that no amount of _chemical_ energy in food can account for such an energy as the time-binding energy. There is only one supposition left, namely, that the time-binding apparatus has a source for its tremendous energy in the _transformation of organic atoms_, and—what is very characteristic—the results are _time_-binding energies.