Sick dogs should always be kept separate. It is a great mistake to put three or four together. As to diet for patients, see article on _Invalid Food_; when they will not take food voluntarily, a small quantity, varying according to size of dog, must be given often, about every two hours or oftener, day and night. It is useless to feed a dog well for sixteen hours, and to leave him to chance for eight. It is often during the night, when the system is at its lowest, that a little good nourishing food, with some stimulant, is most wanted; and it is this attention that saves the patient in many cases. The preparation of food is most important. It should either be done by one’s self, or under the personal superintendence of a responsible person. All milk food should be made fresh three times a day, and any that is left over should be thrown away. All feeding utensils must be kept scrupulously clean, and the spoon, bottle, or feeding-cup that is used for food or medicine should be washed and dried immediately after being used, ready for next time. The cooking utensils also must be kept scrupulously clean. If these things are not attended to, diarrhœa and sickness result, and the patient is weakened, and perhaps has a relapse. Also keep the sick dog scrupulously clean. Each time after feeding clean his lips with a little weak solution of Condy’s fluid on a pad of cotton-wool—which should be thrown away immediately after using—and dry with soft cloth; also cleanse the fundament and prepuce once a day with the same preparation, and keep the eyes free of discharge with a little weak boracic acid lotion, and also clean the teeth with a weak solution of permanganate of potash. _This is very important._ As well as attending to the patient, the room or kennel requires frequent attention. Do not make the air stuffy with strong disinfectants, but it is a good plan to sprinkle the floor, whether a kennel or room, with pine sawdust, and if the flooring be wood, to cover it over with sheets of old newspapers, which may be covered with sawdust, and then all evacuation can be carried away and burnt, for when a dog is very ill he ought not to be allowed to go out. There are some dogs who are so clean that they will not make themselves comfortable in a room, and it becomes absolutely necessary to let them out rather than make them worse by keeping them in. But a dog may be kept for some hours, twelve or even sixteen, to see if he will not give way. Once he has relieved himself in the room, and finds he is not scolded, he gains confidence, and is not so particular in the future. To make an obstinate dog do what is necessary in a room, especially when the weather is bad, and when perhaps it would be fatal to let him out, I give either a dose of aperient medicine or an enema, which invariably has the desired effect. Do not always be fidgeting an invalid. Do what is necessary, and then leave him alone.