Thus decidedly must we reject the mechanical mode of inquiry when it comes forward and arrogates to itself the place of rational cognition in general, and seeks to get mechanism accepted as an absolute category. But we must not on that account forget expressly to vindicate for mechanism the right and import of a general logical category. It would be, therefore, a mistake to restrict it to the special physical department from which it derives its name. There is no harm done, for example, in directing attention to mechanical actions, such as that of gravity, the lever, &c, even in departments, notably in physics and in physiology, beyond the range of mechanics proper. It must however be remembered, that within these spheres the laws of mechanism cease to be final or decisive, and sink, as it were, to a subservient position. To which may be added, that, in Nature, when the higher or organic functions are in any way checked or disturbed in their normal efficiency, the otherwise subordinate category of mechanism is immediately seen to take the upper hand. Thus a sufferer from indigestion feels pressure on the stomach, after partaking of certain food in slight quantity; whereas those whose digestive organs are sound remain free from the sensation, although they have eaten as much. The same phenomenon occurs in the general feeling of heaviness in the limbs, experienced in bodily indisposition. Even in the world of Mind, mechanism has its place; though there, too, it is a subordinate one. We are right in speaking of mechanical memory, and all sorts of mechanical operations, such as reading, writing, playing on musical instruments, &c. In memory, indeed, the mechanical quality of the action is essential: a circumstance, the neglect of which has not unfrequently caused great harm in the training of the young, from the misapplied zeal of modern educationalists for the freedom of intelligence. It would betray bad psychology, however, to have recourse to mechanism for an explanation of the nature of memory, and to apply mechanical laws straight off to the soul. The mechanical feature in memory lies merely in the fact that certain signs, tones, &c. are apprehended in their purely external association, and then reproduced in this association, without attention being expressly directed to their meaning and inward association. To become acquainted with these conditions of mechanical memory requires no further study of mechanics, nor would that study tend at all to advance the special inquiry of psychology.