Food is to be taken to the door of the sick-room by some one other than the attendant. The tray should not be carried into the room. After the meal, take to the door a pan containing water, and let the attendant set the dishes, knives and forks, and the food handled by the child, under the water without touching the rim or sides of the dish-pan. Then any one may carry the pan to the kitchen, where it is to be set upon the stove, and the water holding the dishes and the rejected food is boiled for an hour. After that process the contents of the pan are safe, and they may be handled for washing. Cloths used in wiping the mouth of the patient are to be wrapped in paper and burned. Dejecta should be covered with fresh chlorinated lime, one part to two of water. After the patient begins to convalesce the danger of infection grows greater. When the membrane has disappeared, and the child is able to run about the room, the attendant ceases commonly to use the throat-spray because the process is troublesome. In such cases the diphtheria bacillus remains in the patient's mouth for some time--from a few days to weeks. During the most of this time the child is as dangerous to others as it was while it was ill. In one case in my own experience, the bacillus remained present for eleven weeks from the date of diagnosis, and I then lost sight of the child. In the tenth week the bacillus present when in pure culture killed a guinea-pig in thirty-six hours. This is, of course, an exceptional occurrence; but the routine practice is to keep the patient isolated for three weeks after the membrane has disappeared, unless a bacteriological examination shows that the bacillus is absent. The bacillus remains after the use of antitoxin just as if antitoxin had not been used. When a child is to be released from the sick-room, bathe it carefully with soaped warm water, washing out the hair and under the finger-nails carefully. Then wet a towel with the disinfectant (the acid bichloride of mercury,--a {193} teaspoonful to a gallon of water) and go over the body with it; afterward rinse with ordinary water. Do not let the disinfectant enter the child's mouth or eyes. Next, without allowing the child to touch anything in the room, especially avoiding the door-knob, send it to another room and dress it in clothing that has not been near the sick-room. If, after this process, other children are infected, the explanation is that the child had been released too soon--before the bacillus had disappeared. It commonly happens that a child has been going about the house for some days before a physician has been called in. In that event you have the house to disinfect. You must then wet with bichloride everything the child has touched, and boil all eating utensils.