297. Unsteadiness, continual restlessness, where they accompany good health without being the result of external stimulation, are doubtful indications. Here it will be well to look to the sequence of thoughts. Where, in spite of variableness in general, thoughts are sound and well connected, this restlessness is not a serious matter. The case is worse when the opposite is true, especially when the vascular system appears very irritable, and dreamlike reveries occur. Here the danger of insanity is seen lurking in the distance. The appropriate treatment for such pupils consists in holding them strictly to definite tasks, especially to those occupations that compel a close observation of the external world, and in exacting the performance of the work assigned, without failing to encourage whatever is undertaken from choice. 298. Sensual impulses and violence of temper are apt to go from bad to worse as pupils grow older. Against these, careful supervision, earnest censure, and the whole rigor of moral principles must be brought to bear. Momentary ebullitions of passion, however, unless persistently obstinate attempts are made to justify them, need to be handled gently, that is, as evils calling for precaution and vigilance. 299. The faults hitherto noted lie for the most part on the surface. Others have to be studied as occasion offers in instruction. There are minds so dull that even the attempt merely to secure connection with definite portions of such thoughts as they have does not succeed. Easy questions intended to raise their ideas into consciousness only increase the resistance to be overcome. They are seized with embarrassment from which they seek to escape, sometimes by a simple, “I don’t know,” sometimes by the first wrong answer that comes to hand. Mental activity has to be enforced, yet remains feeble at best, and it is only in after years, under pressure of necessity, that they acquire some facility for a limited sphere. Others, whom one would be inclined to call contracted rather than generally limited, because by them reproduction is performed successfully but within a narrow compass, exhibit a lively endeavor to learn, but they learn mechanically, and what cannot be learned in that way they apprehend incorrectly. These undertake, nevertheless, to form and express judgments, but their judgments turn out to be erroneous; hence they become first discouraged and then obstinate. Again, there are those whose ideas cannot be dislodged, and still others whose ideas cannot be brought to a halt. These two classes call for a more detailed consideration.