The sixth period, beginning at the age of thirty-five and ending at forty-two, is marked by reactions, changes and crises. It may, therefore, seem an unlucky period; but if we understand the law and comply with it, we shall be better and stronger in every way after we have passed this period. During the seventh period, the effects of the sixth or crises period continue and adjust themselves. It is a period of reconstruction, of recuperation and rest, and thus the best preparation for a new cycle of sevens which begins with the fiftieth year.** **Those who are interested in the Law of Periodicity as applied to life in general, will find much valuable information in a book entitled ~Periodicity~ by J. R. Buchanan, M.D., published by the Kosmos Publishing Co., 2112 Sherman Ave., Evanston, Il. In this connection it is interesting to note that the Mosaic law recognized the law of periodicity and fixed upon Sunday as the first day or "birthday" of the week, and upon Saturday (the Sabbath) as the last or "rest" day, in which to prepare for another period of seven days. Orthodox science now admits that the normal length of human life should be about one hundred and fifty years. This would constitute three cycles of forty-nine years each, the first corresponding to youth, the second to maturity, and the third to fruition. The Law of Sevens in Febrile Diseases If we apply the Laws of Periodicity to the course of acute febrile or inflammatory diseases, we find that the sixth day from the beginning of the first well-defined symptom marks the first Friday-period or the first crisis of the disease, and that every seventh day thereafter is also distinguished by aggravations and changes, either for better or for worse. The Law of Sevens in Chronic Diseases Applied to the cure of chronic diseases under the influence of natural methods of living and of treatment, the Laws of Crises and of Periodicity manifest as follows: When a chronic patient, whose chances of cure are good, is placed under proper (natural) conditions of living and of treatment he will, as a rule, experience five weeks of marked improvement. The sixth week, if conditions are favorable, usually marks the beginning of acute reactions or healing crises. This means that the healing forces of the organism have grown strong enough to begin the work of acute elimination. By all sorts of acute reactions, such as skin eruptions, diarrheas, feverish, inflammatory and catarrhal conditions, boils, abscesses, mucopurulent discharges, etc., Nature now endeavors to remove the latent, chronic disease taints from the system. The character of the healing crises and the time of their occurrence in any given case can often be accurately predicted by means of the Diagnosis from the Eye (see Chapter XIII), from Nature's records in the iris. But the best of all methods of diagnosis is the cure iself, because weak spots and morbid taints in the organism are revealed through the healing crises.