334 PHYSICAL EXPRESSION. 



of thought with the corresponding changes in the 

 corporeal organs, than the eye can see itself" 

 (p. 258). 



" Not to mention the well-known effects of grief, 

 fear and joy, which affect the whole circulation, 

 there are certain passions and sentiments which 

 produce partial and local effects. 



"Fear produces debility, almost amounting to 

 palsy. Courage and ardor of mind, on the contrary, 

 adds to the natural strength. When the mind is 

 agitated by some interesting object, and calls upon 

 the body for some extraordinary exertion to effect 

 its end, the muscles are thereby enabled, as it were 

 by magic, to perform acts of strength, of which they 

 would be entirely incapable in cold blood. In 

 circumstances of danger, for instance, where life or 

 honour are at stake, exertions are made in over- 

 coming mechanical resistance, which seem incredible, 

 and would be impossible, were not the mind in a 

 sort of phrenzy ! and it is truly admirable, in the 

 economy of nature, that an idea in the mind should 

 thus in a moment augment the powers of motion 

 and inspire additional resources of strength, 

 adequate to the occasional calls of life. The great 

 increase of strength in maniacs, is also referable to 

 the passions of the mind. These considerations 

 would almost lead us to doubt whether or not the 

 accounts we have of the great feats of strength 

 ascribed to individuals in the heroic ages are 

 fabulous or not " (p. 259). 



" The other class of stimuli to be enumerated are 

 the external. These consist in impressions made 



