It is probably safe to assert, with Le Bon, that all matter, “down to the absolute zero of temperature,” radiates electrified and more or less luminous particles, albeit they are invisible to the human eye. It is because of its property of emitting negative electrons (Beta rays) that potassium is a necessary constituent of all living matter. It may, however, be replaced, under certain conditions, by other radioactive substances. Prof. Barton Scammel, of the British Radium Society, gave it as his opinion (in 1922) that further experience in the proper uses of potassium salts and radium in solution would lead to the realization of a new golden age. He predicted, among other “good tidings,” life for 120 years in the bloom of youth, the “pep” of 25 years at 75, a third set of teeth, new hirsute coverings for erstwhile bald heads, muscles like Jack Dempsey’s. Dr. C. Everett Field, of the New York Radium Institute, stated publicly, in backing up Scammel’s hopes and theories, that he thinks another ten years will see human life vastly prolonged as a matter of course by the use of radium. He said: “We have ascertained beyond question that potassium salts are necessary to heart action, that they are slightly radioactive, and that radium can be substituted for them with a degree of success. “It was Dr. Zwaardemaker, physiologist of the University of Utrecht, who first discovered, a number of years ago, that radium could do in the blood stream what potassium salts do in the normal person. He took an animal’s heart, which was kept beating outside the animal, and removed the potassium element. It was not longer possible then to keep it in action. Then he substituted a radium solution and it was possible to restore action.” Dr. Field stated that it had been discovered that the systems of victims of cancer and other wasting diseases were deficient in potassium salts, and that as their systems were made to assimilate potassium a tonic effect was noticeable at once. The greatest trouble was to make the body assimilate the potassium. “The fact is,” said Dr. Field, one of the more conservative radium therapists, “that radium does not do the healing. But, for that matter, neither does any other form of healing. The healing exists within the organism. And radium, I am convinced, in some cases, is the most efficient medicine to give needed stimulus to the healing apparatus of diseased organisms.” Even now, he believes, radioactive treatment may prolong life at least 15 years. For internal treatment, either doses of radioactive water, or extremely minute quantities of radium itself, are administered. Radioactive water is taken from springs found to contain traces of radium, or radium is used to make ordinary water radioactive. The difficulty with spring waters is that they lose their radioactive power when bottled and transported, and must be consumed at their source.