This is the nature of all convulsive agitations, especially in weaker subjects, which are the most liable to the severest impressions of pain and fear.

The only difference between pain and terror is, that things which cause pain operate on the mind by the intervention of the body; whereas things that cause terror generally affect the bodily organs by the operation of the mind suggesting the danger; but both agreeing, either primarily or secondarily, in producing a tension, contraction, or violent emotion of the nerves,[31] they agree likewise in everything else.

For it appears very clearly to me from this, as well as from many other examples, that when the body is disposed, by any means whatsoever, to such emotions as it would acquire by the means of a certain passion; it will of itself excite something very like that passion in the mind.
SECTION IV.
CONTINUED.
To this purpose Mr.Spon, in his "Recherches d'Antiquite," gives us a curious story of the celebrated physiognomist Campanella.

This man, it seems, had not only made very accurate observations on human faces, but was very expert in mimicking such as were any way remarkable.

When he had a mind to penetrate into the inclinations of those he had to deal with, he composed his face, his gesture, and his whole body, as nearly as he could into the exact similitude of the person he intended to examine; and then carefully observed what turn of mind he seemed to acquire by this change.