Lecture XVIII
Let us suppose a winter season, in which there is a powerful influence on the solar activity—and note please, not the operation of light, but the solar action—through the outer planets, Mars, Jupiter and Saturn. A constellation of that description in the winter operates quite differently from the unimpeded action of the Sun, when Mars, Jupiter and Saturn are at a greater distance. In such a winter the atmospheric conditions will differ from the norm; and there will be a remarkable influence (on persons constitutionally so disposed) upon the rhythmical activity between chest and head, of which the most conspicuous is the act of breathing itself. We may state, however, that such cosmic conditions considerably strengthen the inclination to make this rhythm regular in people who have been born from sound conditions, and who are inwardly robust—though their external appearance may be very slight and delicate. In the case of such persons the respiratory rhythm is very well regulated and so also is the whole rhythm between chest and head. Such a stabilised inner rhythm is not easily disturbed from outside; serious injuries are required to affect it. But on persons with an irregularity of this rhythm, the external influences referred to work very strongly to disturb still more the already disturbed rhythm. Thus everyone with this disposition and resident in those parts of the earth under the special influence of the constellation in question, become liable to the complaints grouped as influenza and grippe. These conditions and factors must be in operation, in order to create favourable soil for such ailments as influenza.