In scarlet fever, measles, and chicken-pox, as in all positive febrile diseases, we have seen that there is a morbid increase of vibration in the electrons. Here, therefore, red light is used for curative purposes because it vibrates quietly. In lupus, chronic rheumatism, anemia, and such diseases, a slow vibration of electrons takes place in the body; hence, in such cases, blue light is a medium of cure. _Internal Treatment._ These considerations of the effects of colored light bring us to the treatment of disease by so-called internal means. _Salts._ In a chemical sense the salts of the body are those compounds which consists of two elements, such as water. All salts possess the peculiarity of producing electrical excitation; consequently it is possible for them to generate electricity when coming in contact with carbohydrates. Now the entire structure of the human connective tissue is nothing more or less than a combination of carbohydrates with a salt, that is, with sulphate of lime-ammonia. In this way, natural electrical energy of a positive character exists in the connective tissue which forms the basis of the spleen, the lungs, the stomach, the intestines, the muscles, in fact of the whole body. Therefore, the nervous and arterial systems, together with the heart, are supplied, through the medium of their basis of connective tissues, with electrical energy, by the contact of the electro-negative oxygen which the blood furnishes and the positive sulphate of lime-ammonia in the walls of these organs. _Nourishment._ We now come to a consideration of nourishment. We recognize today the truth of what was asserted years ago by Jezek; namely, that food undergoes a kind of gaseous decomposition in our bodies--one in which the atoms of the elements are resolved into electrons and so become the foundation of new atomic structures. For the separation of atoms into electrons and their entrance into new and different forms--that process which is constantly taking place before our eyes in the external world of Nature--must assuredly be likewise going on in like manner in the human body. _Food._