come down from me to you; and while I have power to awaken its vibration, its vibration must have power to awaken the same impression in you. Hence, then, in respect to all communication, there must necessarily be media connecting one with the other, who are all concerned in making and receiving the communication; and the medium must be such that it will extend from the one to the other. It must be continuous also; for if there be any interruption in the media, the communication can not be transmitted. For illustration, if I would address your consciousness through sound, the atmosphere, as the medium, must be continuous between you and me; for if you interpose a vacuum, you can not transmit the action through it, the connection being destroyed. So in regard to light. Interpose any medium which will not allow the light to pass through it, and I can not transmit the image by means of light. So also the nerve-medium must be continuous, in order to admit of transmitting communication through it. The mental medium must likewise be continuous, or I can not represent my thought through it. You perceive, then, this universal law in respect to communication between one mind and another, that there must necessarily intervene a medium, which must be continuous between them, and it must be such as to awaken action in the one, and transmit and awaken the same action in the other. It matters not what the plane is. They all come under the same law.
Before I, by my simple will-power, can transmit a thought or idea or impression of my mind to you, there must be something between us which can take up and repeat that idea, or record it in your consciousness. If
