For the illustration of the first species, I may remark, that there are some actions performed by particular parts of the body which are apparently simple; but there are others which are complicated, and consist evidently of different parts, which, in the aggregate, form a peculiar action, but which action may be modified according to the degree in which these different parts exist. Thus, there are various parts which, when taken together, form the inflammatory action, heat, redness, swelling, &c.; but these may, in certain cases, exist in different proportions. The ulcerative action is a complicated one, and consists of the secretory and organising action, or the purulent and granulating. These, in a healthy ulcer, bear a certain relation to each other, and are at all times so connected, that, when one part is injured, the other is also affected; but the one part may be affected more than the other. In the indolent ulcer, or that in which the action is too low, both parts are most commonly (at least after some time) equally affected, and a state of universal diminution, and consequent imperfection, takes place; but, in the beginning of this state, that is to say, when the healthy ulcer is first becoming diseased, and when the unhealthy condition has made little progress, it is not uncommon to observe an inequality in the action, or the granulations more affected than the discharge. In this genus of ulcers, however, the inequality is more striking, and frequently more permanent. It is worthy of remark, that though the granulating action may be increased beyond the purulent one, that yet the purulent one never exists in a state of overaction without a correspondent affection of the granulating action; in which case, very different effects and symptoms are occasioned, and the second species of overacting ulcers is produced.