88 NATURAL HISTORY. 



sometimes put into a cradle and rocked to sleep 

 which may occasionally derange the stomach and 

 head. Before children are put up into the cradle, we 

 ought to be certain they want nothing, and when they 

 are rocked, it ought never to be with such violence as 

 to stun or stupif'y them. The eyes of children are 

 always directed towards the light, and if one eye only 

 be directed to it, the other will probab'y become 

 weak ; both eyes ought, therefore, to be equally 

 shaded, or equally exposed. Squinting is commonly 

 the effect of injudicious treatment in this respect,. 

 For the first two or three months the diet of the in- 

 fant Ought chiefly to be confined to the'mother's milk. 



The eight incisores, or fore-teeth, appear first. 

 They are produced generally by pairs, and from two- 

 months old to ten or twelve. The four canini (or dog- 

 teeth) appear commonly about the 9th or 10th month. 

 About the close of the first, or in the course of the 

 second year, sixteen other teeth appear, called niolares, 

 or grinders. In the 5th, 6'th, or 7th year, the fore- 

 teeth, and the dog-teeth, and the first six of the 

 grinders, naturally shed, and a new set appears. At 

 the age of puberty, or later, the denies sapiential, or 

 wise teeth, appear. Women are said to have fewer 

 teeth than men. 



The hair of most infants is exceedingly light, al- 

 most white. When a child is suffered to cry violently, 

 and too long, it is in danger of a rupture, but the 

 early application of bandages or trusses will frequently 

 remove the complaint. 



The frame of infants is less sensible of cold than 

 during any other season of life. The pulse is strong, 

 and it is therefore fair to conclude, that the internal 

 heat is considerable. Small animals, for the same 



