We see a non-contagious disease in the very process of transformation into a contagious one in the case of pulmonary consumption. It was observed occasionally that one of the married partners who had nursed the other through the disease fell a victim after a while to the same malady. Doctors and people began to suggest contagion. The cases of one attack following the other were noticed more and more, and were reported in the medical journals. It was spoken of, thought of, brooded over. The confirmatory cases were all carefully noted; the failures to infect were all ignored, as they always are by people who are looking for contagion. The germ theory has given a great impetus to the idea of contagion. Dr. Loomis actually classifies tuberculosis among miasmatic contagious diseases. Fear will do the rest. In another generation the occasional fact will be a common fact, and in still another, a fixed fact; and the contagiousness of consumption will be enrolled among the concrete errors of the profession. Such has probably been the genesis of all contagious diseases in the remote past. Fear being recognized as a powerful cause of disease, and a direct and great obstacle to recovery, a wise sanitation will exert itself to prevent or antidote its influences. To eradicate fear is to avert disease, to shorten its duration, diminish its virulence, and promote recovery. How shall we accomplish it? By educating the people up to a higher standard of life. By teaching them a sounder hygiene, a wiser philosophy, a more cheerful theology. By erasing a thousand errors, delusions, and superstitions from their minds, and giving instead the light, the beauty, and the loveliness of truth. There is a mental and moral sanitation ahead of us, which is far more valuable and desirable than all our quarantines, inventions, experimentations, and microscopic search for physical causes. I will draw the picture of a sick room in charge of physicians and nurse, by whom this enlighted sanitation has been ignored or unheeded. It is a chamber of fear, soon, in all probability, to be the chamber of death. The room is darkened, for they are afraid of the light, that emblem of God's wisdom which should shine into all rooms, except when it is disagreeable to the patient. The ventilation is insufficient, for draughts, you must know, are very dangerous. The friends have doleful faces, moist eyes, sad voices, which reveal danger and doubt, and they converse in subdued whispers, which alarm and annoy the patient. The nurse and the doctor sometimes talk of their cases before the sick man, tell how very ill they were, how they suffered, how they got well miraculously, or how they died. The sympathetic visitor regales his hearers, the patient included, with his or her knowledge of similar cases, and their results, the great amount of sickness prevailing, and the success or ill success of this or that doctor.