344 PHYSICAL EXPRESSION. 



right arm of his nurse, and he would not take it 

 in his left hand until a week later although I tried 

 to make him do so ; so that the right hand was 

 a week in advance of the left. Yet this infant 

 afterwards proved to be left-handed, the tendency 

 being no doubt inherited his grandfather, mother, 

 and a brother having been or being left-handed. 

 When between eighty and ninety days old, he 

 drew all sorts of objects into his mouth, and in two 

 or three weeks' time could do this with some skill ; 

 but he often first touched his nose with the object 

 and then dragged it down into his mouth." 



In this description we clearly see what import- 

 ance C. Darwin attached to movements, and to 

 movements in children as modes of expression of 

 infantile development, especially as to the nerve- 

 system and capacity for mentation. 



Bibliography. 



The following works are referred to in the text, 

 or contain matter of interest in relation to the 

 modes of expression : 



1519, Leonardo da Yinci died this year. His 

 "Treatise on Painting" published 1651. 



1644, Bulwer, John, " Chirologia, or the Natural 

 Language of the Hand," etc. 



1649, Bulwer, John, " Pathomystomia, or a Dis- 

 section of the Significative Muscles of the Affections 

 of the Mind," etc. 



1667, Le Brun, " Conferences sur 1'Expression des 

 differents Caracteres des Passions." 



