46 EXPRESSION. 
one another, be taken, the one left in neglect, the 
other subjected to educating influences, the differ- 
ence of treatment will be likely to tell on the 
moulding of the features. 
Expression of the Emotions. 
The element in expression of emotion, whether 
by gesture or feature, which appears to me to be 
the most important, has often been entirely over- 
looked ; and although it seems to have been largely 
present to the mind of Piderit and of Gratiolet,’ 
yet the rationale has not been effectively ex- 
pounded, and we see one of the most elaborate and 
ingenious writers on the subject, Mr. Darwin, 
throwing it altogether aside. 
I shall now try to put it in definite form. To 
this end, I observe first, that words indicating posi- 
tion and quantity represent ideas relating to both 
the physical and mental world. Secondly, emotions 
expressible by such words are indicated by the 
attitudes, gestures, and movements of body ex- 
pressed by the same words. Thirdly, the same 
principle is applicable to movement of feature. 
1. For the sake of clearness, it may be well to 
discuss the first of these propositions separately. 
The words useful for our purpose by referring to 
1 Darwin, loc. cit., p. 6. 
