A cord in vibration tends to induce in another cord placed near it, a vibration of corresponding frequency, whether or not the receptor corresponds in frequency to the generator. This property, called "sympathetic induction" belongs to all vibrating mediums and the "order" or "degree" of sympathetic induction" is directly as the resonance of the receptor. "Sympathetic induction" is simply "forced or induced vibrations."
"By use of the dominant mode, which is allied to the "order" of etheric vibrations, we can induct, "sympathetic negative attraction" or "sympathetic positive propulsion" in any mass, according to its mass chord." The Snell Manuscript