THE TEETH. 



LESSON IX. 



THE TEETH CONVERSION OF FOOD INTO BLOOD 



DIGESTION. 



No part of our bodies Is more remarkable than 

 the teeth ; and none can more clearly show us how 

 much wisdom and design have been bestowed upon 

 our form by the Divine Architect of the universe. 



If you look into the mouth of a very young 

 child, you see no teeth. The gums are low and 

 rounded, and show no marks of the great change 

 that a few months will produce in them. There 

 are, however, buried beneath them, two or more 

 complete sets of teeth, each tooth shut up in a 

 little bag, or capsule, and separate from the rest. 



Now why is it that infants are without teeth? 

 Because at this period of our lives we live upon 

 milk and other soft diet, and because our digestive 

 organs are not fitted to receive food so solid as to 

 require chewing. After a time, as we become 

 stronger, and require different food, the teeth ap- 

 pear in regular order ; first the front teeth, then 

 the side teeth, and lastly the double teeth. 



The set of teeth which first appears, occupies 

 only part of the jaw, and is generally completed 

 about the iiJant's second or third year. These 

 teeth are called the milk-teeth, and are shed, with 

 the exception of six or eight, in the course of three 

 or four years. Our bodies are now become stronger, 



