The other class of children, as a rule, are very handsome babies and children. The brightness is noted by parents at a very early age, and they extol their many clever qualities and sayings. The tendency is for the parents to cultivate these precocious qualities and believe it to be the proper thing to encourage them; while in early life this class may possess the peculiarities of the other class and also show those of degeneracy. These children are the best scholars in the schoolroom and learn their lessons with apparently little or no study. They are usually thin, frail children, and very nervous. Very little food is taken and much of that is not assimilated. Especially is this true of the lime salts, which form bone and tooth structure. These lime salts are excreted through the kidneys and salivary glands. This is easily demonstrated by an examination of urine, mouth, and teeth. Large collections of tartar are always found in these cases. Children of both classes are sure to show stigmata of degeneracy. This period of degeneracy commences at the sixth year, or at about the time the first period of brain development ceases. The bulk of the brain has obtained its growth. In some the child commences to improve mentally very fast. In others mental development is slow. In still others it ceases altogether. From the time the second set of teeth begins to develop until the twelfth year, neuroses of development and stigmata of degeneracy are stamped upon the head, face, nose, jaws and teeth, and later any of the conditions mentioned under the heads of nutritive degeneracy and local perversion tendencies may appear.