the peculiar seat of the diseased condition, as some suppose, nor to be otherwise predisposed to scrophulous inflammation, except in so far as its natural delicacy is increased by the diseased condition which it possessed, ab initio, in common with the rest of the body; and consequently it is rendered less able to perform its functions properly, the effect of which is, the induction of a new local diseased action, or slow inflammatory action, by the slightest cause. [89] This term is used here in a different sense from its common one, which signifies sensibility, or delicacy with regard to sensation, and capability of being acted on. Besides the common exciting causes of inflammation, the particular formation of organs may induce this disease, or at least make very slight causes produce it. Thus, for instance, in people with a very small narrow chest, the circulation of the blood must be performed with greater action than in other circumstances, and thus may tend to induce an inflammatory state. When the bones are very vascular, and imperfectly formed, they are apt to have a morbid degree of action excited in them by very slight causes; and the same holds true with regard to any other part of the body which is imperfectly formed, or which is not exactly fitted for the support and performance of its requisite action[90]. [90] Parts which are improperly organised, or which are not in every respect similar, both in their structure and constitution (by which I mean, mode of acting in general), to what naturally they ought to be, are not only less capable of performing their actions aright, but likewise are to be considered as in some respect extraneous to the human body, or, as it were, insulated, and do not correspond exactly to other parts. They therefore receive less support from the neighbouring parts, and, consequently, have their power diminished. The imperfection of action consequent to these causes is proportioned to the morbid condition of the part.