The same writer says, along the same general lines: "Many have of course noticed the differing mental atmospheres of stores, offices, and other places of business. Some of such places give one an air of confidence and trust; others create a feeling of suspicion and distrust; some convey an impression of active, wideawake management, while others impress one as being behind the times, and suffering from a want of alert, active management. These differing mental atmospheres are caused by the different prevailing mental attitudes of the owners of the respective establishments. The managers of business places send forth thought-waves of their own, and their employees naturally falling into the pace set for them also send forth similar vibrations, and before long the whole place is vibrating on a certain scale. A change of management soon produces a marked change in the entire mental atmosphere of the place. In the same way, we notice the mental atmospheres of the houses we happen to visit; in this way we become conscious of an entire mental scale of many notes, the notes being sounded unconsciously by the minds of the occupants of the houses. From some thresholds radiate harmony, while others breathe the spirit of inharmony. Some radiate emotional warmth, while others chill one like an iceberg, by reason of the emotional coldness of the dwellers therein. Likewise, the low quarters of our cities, the dens of vice, and the haunts of dissipation vibrate with the character of the thought and feeling of those inhabiting them. And, often, the weak-willed visitor is thus tempted. In the same way, certain other places are charged with the vibrations of strong, helpful, elevating mental states, which tend to lift up and elevate, energize and stimulate the minds and feelings of those visiting these places. Thought and feeling are contagious, by reason of the laws of mental vibration and mental induction." Mental Whirlpools. The contagion of thought-vibrations is manifested by such vibrations coming into contact with the minds of other persons within the field of mental induction of the first person, and there setting up similar vibrations. We know that orators, actors, preachers and others addressing audiences of persons, send forth strong mental currents which tend to awaken corresponding vibrations in the minds of their hearers. We weep, smile, grow angry, feel happy, according to the character of the thought-waves, of the person on the platform or the stage, providing that we accept the same. And, according to the same principle, persons scattered over large areas are influenced and affected in the same way by whirlpools of mental vibrations set into original motion by some strong, masterful public man. A writer has said concerning this point: Mental Tidal Waves