Fear and worry have the effect of closing up the channels of the body, so that the life forces flow in a slow and sluggish manner. Hope and tranquillity open the channels of the body, so that the life forces go bounding through it in such a way that disease can rarely get a foothold. Not long ago a lady was telling a friend of a serious physical trouble. My friend happened to know that between this lady and her sister the most kindly relations did not exist. He listened attentively to her delineation of her troubles, and then, looking her squarely in the face, in a firm but kindly tone said: "Forgive your sister." The woman looked at him in surprise and said: "I can't forgive my sister." "Very well, then," he replied, "keep the stiffness of your joints and your kindred rheumatic troubles." A few weeks later he saw her again. With a light step she came toward him and said: "I took your advice. I saw my sister and forgave her. We have become good friends again, and I don't know how it is, but somehow or other from the very day, as I remember, that we became reconciled, my troubles seemed to grow less, and today there is not a trace of the old difficulties left; and really, my sister and I have become such good friends that now we can scarcely get along without one another." Again we have effect following cause. We have several well-authenticated cases of the following nature: A mother has been dominated for a few moments by an intense passion of anger, and the child at her breast has died within an hour's time, so poisoned became the mother's milk by virtue of the poisonous secretions of the system while under the domination of this fit of anger. In other cases it has caused severe illness and convulsions. The following experiment has been tried a number of times by a well-known scientist: Several men have been put into a heated room. Each man has been dominated for a moment by a particular passion of some kind; one by an intense passion of anger, and others by different other passions. The experimenter has taken a drop of perspiration from the body of each of these men, and by means of a careful chemical analysis he has been able to determine the particular passion by which each has been dominated. Practically the same results revealed themselves in the chemical analysis of the saliva of each of the men.