These are the means which the Ruling Genius of the universe has established by which the person may maintain his contact with the outward world. One of these sets takes up vibrations and reports them in terms of light. The other takes vibrations and reports them in terms of sound. The two sets look almost precisely alike. The means by which they are made to distinguish vibrations into these two different forms of interpretation remains a mystery, unless it be that they are made sensitive only to given lengths and types of waves. The eye was the first camera, and the inventor of the photographic process necessarily had to base his work on precisely the same principle. A sensitive surface had to be provided; a means had to be established whereby it might receive and be affected by ether vibrations of given lengths; then the result, which in the case of the eye is so temporary, had to be chemically fixed and thereby rendered permanent. The phonographic process is related to the vibration theory of sound just as the photographic process is based upon the wave theory of light. A phonographic record is simply the photograph of a sound. A surface had to be provided which was capable of receiving the record of the vibrations which make a given sound. The means had to be provided by which they could be permanently recorded there. Then a mechanism capable of reproducing them made the phonograph complete. The same effect was produced upon the ear as would have been produced by the original vibrations themselves. Thereby the thing which is fleeting and temporary to the ear was rendered more or less permanent. These two inventions proved once and for all the truth of the theories on which they were based. Telegraphy and telephony, both ordinary and wireless, are likewise based upon phases of the vibration principle. Each in its day has been revolutionary. We are, however, only upon the threshold of achievement in these vibratory means of communication. Each is simple, when once achieved, because each is based on ordinary and everyday laws of nature. Those who are improving upon the processes already established are not those who are trying to find different paths. They are those who are seeking a closer acquaintance with natural laws as they are, and who are seeking better ways of relating ourselves to those laws. We cannot alter natural forces. We can only improve upon their use. There is a great field for scientific and inventive progress of an intensive nature. As we move forward in the effort to gain a little firmer hold upon natural processes, we find ourselves able to throw away today equipment which was very necessary yesterday. First, we could carry communication farther and better with metal media between the communicating points. Now we do it equally well without the artificial media.