Note 90 — DISSERTATION V.

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.