In many of these cases Nature happily takes matters into her own management. For a year or two, or more, the mind has grown apparently at the expense of the body; the parents take a fearful joy in their darling's acquirements; and if it should live, think they, of what remarkable talents will it not be the possessor! By degrees, the extreme quickness of intellect becomes less remarkable; but the body begins to increase in robustness; and a year will sometimes suffice to transmute the little fairy, so quick, so clever, but so fragile, into a very commonplace, merry, rosy, romping child. I may add that it is well to bear in mind the converse of this; to remember that body and mind rarely grow in equal proportion at one time; that the incorrigible little dunce, though not likely to prove a genius as he grows older, will yet very probably be found at twelve or fourteen to know as much as his playmates. A dull mind, and a sickly or ill-developed frame may make us anxious: but if the physical development is good, the mind will not be likely to remain long below the average standard.
But sometimes, the over-tasked mind leads to mischief which Nature cannot rectify; an attack of water on the brain destroys the child, or if not it sinks under almost any accidental disease. In other instances neither of these results takes place, but the whole nervous system seems profoundly shaken, and the moral character of the child seriously, and even permanently injured. I remember a quick and clever little girl aged five and a half years who was urged on by her governess to work which she delighted in, till at length the signs of over-taxed brain showed themselves in frequent extreme irritability, and occasional attacks of causeless fury amounting almost to madness. It was fully a year during which almost all mental work was suspended, while the child was sent to have complete change under most judicious management in the country, before her mind quite recovered its balance and she became able to resume her studies in a very moderate degree.
Cases such as this are instances of the slightest degree of a condition which if not remedied may pass into confirmed insanity. I believe the gradations to be almost imperceptible by which the one state passes into the other; and I have known instances in which the ungovernable temper and occasional fury of the child have passed in youth into abiding insanity which rendered the patient the inmate, and I fear the permanent inmate, of a lunatic asylum.