To prevent these diseases, means ought to be used to invigorate a child's constitution by plain, wholesome food, as recommended under the article of diet; by exercise and fresh air; [Footnote: The young of animals seldom suffer from cutting their teeth--and what is the reason? Because they live in the open air, and take plenty of exercise; while children are frequently cooped up in close rooms, and are not allowed the free use of their limbs. The value of fresh air is well exemplified in the Registrar-General's Report for 1843; he says that in 1,000,000 deaths, from all diseases, 616 occur in the town from teething while 120 only take place in the country from the same cause.] by allowing him, weather permitting, to be out of doors a great part of every day; by lancing the gums when they get red, hot, and swollen; by attention to the bowels, and if he suffer more than usual, by keeping them rather in a relaxed state by any simple aperient, such as either castor oil, or magnesia and rhubarb, &c.; and, let me add, by attention to his temper: many children are made feverish and ill by petting and spoiling them. On this subject I cannot do better than refer you to an excellent little work entitled Abbot's _Mother of Home_, wherein the author proves the great importance of _early_ training. 70. _Have the goodness to describe the symptoms and the treatment of Painful Dentition_? Painful dentition may be divided into two forms--(1) the Mild; and (2) the Severe. In the _mild_ form the child is peevish and fretful, and puts his fingers, and everything within reach, to his mouth, he likes to have his gums rubbed, and takes the breast with avidity, indeed it seems a greater comfort to him than ever. There is generally a considerable flow of saliva, and he has frequently a more loose state of bowels than is his wont. Now, with regard to the more _severe_ form of painful dentition--The gums are red, swollen, and hot, and he cannot without expressing pain bear to have them touched, hence, if he be at the breast, he is constantly loosing the nipple. There is dryness of the mouth, although before there had been a great flow of saliva. He is feverish, restless, and starts in his sleep. His face is flashed. His head is heavy and hot. He is sometimes convulsed. [Footnote: See answer to Question 63.] He is frequently violently griped and purged, and suffers severely from flatulence. He is predisposed to many and severe diseases.