Suppose that this baby is the third or fourth, the mother knows what to do for the new little one, but how about the others? She is still anxious to do what is right, or perhaps she is not anxious, and her attitude toward the children is not what it should be. Perhaps she does not realize that she will be called to account for these souls intrusted to her care, that these bodies will do their part in life, well or ill, as she treats them wisely or foolishly. Here is true missionary work. A thoughtful, intelligent, judicious nurse can show a mother that an adenoid may be responsible for Johnny's inattention, as it causes dullness of hearing, how Mary's fretfulness is caused by too little sleep or by insufficient ventilation of her room at night. She can explain how irregular eating causes the children to be cross and irritable. She can show why the first teeth should be removed when the second begin to push towards the gum. She can teach the mother that the headaches so often met with, in children who go to school, are due, perhaps, to eye strain, and can not be corrected with pills, and should never be soothed with headache powders. She can show the evils of the gallons of soda water too many young women swallow, of the injudiciousness of allowing young girls to congregate in drug stores. These last two evils, "soda water and the drug store habit," the mother may know nothing about. She is busy at home with the "little ones," and the fourteen- or sixteen- year-old girl only too often is allowed to wander off "down town" with other young girls, and what she does there would astonish many a mother. Every nurse should know how to teach her patient to guard herself and her children from tuberculosis. She should be able to show what the early symptoms are, what is then necessary to do, what care should be taken of the sputum, of the patient's food, of his eating and drinking vessels, his bed and bedding. She should know how to teach a tuberculosis patient to care for himself, how he can avoid giving his disease to others, if he stays at home; and where he will find proper hospital or sanatorium accommodations if he goes away. Most mothers are very thankful for practical hints from one who is supposed to know, and who, during a four to six weeks' stay, makes herself one of the family, and offers advice in the _right way_ and _at the right time_.