=Estimation of Want of Balance.=--If it is easy to determine backwardness by a direct examination of a child's state of instruction, the difficulty of establishing a lack of mental balance is, on the other hand, very great. Such want of balance is indicated by breaches of discipline, inattention, naughtiness, lying, violence, brutality, etc. But it would be a very unruly child who would not behave quietly when taken apart by the inspector. Isolated in the examination room, surrounded by strange, grave people, the child shrinks into himself. He has little occasion or desire for a display of rebellion or naughtiness when his comrades are not there to admire him. Possibly an exact estimation of his reactions, of his motor ability, of his power of attention, would indicate the presence of some anomalies; but this is not certain, and is not to be relied upon. There may be some hope in that direction for the pedagogy of the future, but scientific investigations cannot help us to-day. In short, mental want of balance cannot, in the majority of cases, be the object of direct examination. How, then, can it be estimated? Indirectly, by the evidence of others. The inspector, then, must be content to accept the facts which are given to him by the teacher, but he must not accept them altogether on trust. Are these facts correct? Are they probable? Is any evidence of them to be found? Have they been altered in the telling? Such will be the first queries to awaken the critical spirit of the inspector. Then it must not be forgotten that he can question the parents, and hear their replies before letting them know the opinion of the teacher, and that everything they say will help him to judge not only the child, but the family circumstances in which he lives. The ill-balanced are often spoiled, or only children, or children not looked after, or children whose father has disappeared. The sons of widows form a considerable contingent. Now, the inspector will gain a good deal of information from the school history of the child. The ill-balanced is a nomad. He has attended several schools. It is important to find out what impression he has left behind him. The proof of want of balance is not to be taken from a single teacher. If three teachers, at least, whose pedagogic reputation is good, agree about a child, the chances are that their estimate is correct. The inspector will resort to such controls, and if he is not satisfied, and if the alleged facts are not very serious, he will remove the child to another class or another school rather than send him to a class for defectives.