written on the enlargement and proof of this statement. The foregoing paragraph will, however, I trust, make my meaning sufficiently clear. By an instinct I mean an impulse, apparently spontaneous and involuntary, and not the result of a process of reasoning at the time, disposing one to feel and act in a certain regular manner. Observation and experience have taught us that dispositions of this kind in any individual may have been either created in himself, or received transmissively from his parents, having in the latter case been congenital. On the ground of this distinction instincts may be divided into the two classes of those which have been acquired, which are generally called habits, and of those that have been inherited, which are generally called instincts. This division, however, has respect only to that which is unessential and accidental, because that which brings any feeling, or act, into either class is that it originated in an impulse that arises, on every occasion that properly requires its aid, regularly, and without any apparent process, or effort, of reason. It is founded on an apparent difference in origination, but primarily the origination in both members of the division must have been the same. In this particular these moral conditions may be illustrated by an incident, or accident, of the property men have in things; an estate is not the less property because its possessor acquired it, nor is another the more so because he inherited it from his predecessors. And just as we distinguish between the unessential circumstances that a property has been acquired by a self-made man, or that it has been inherited, so do we between these two divisions of instinct. It is, however, clear that a habit is merely an acquired instinct, and an instinct an inherited habit. That the thing spoken of should be habitual, that it originated in a certain regular impulse, and not in a conscious exercise of the reasoning faculties at the time; and that the impulse to which it is attributable arises regularly whenever required, and produces, on like occasions, like acts and feelings, are the essential points.