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MANUAL OF NATURE STUDY. 
3.—Lessons on Teeth. 
1. Have the children examine the cat’s teeth at 
home, a . As to number, b. As to kind, whether 
long or short, blunt or sharp, c. As to use, how 
the cat eats its food. d. Are the cat’s teeth filthy 
and decayed? Do they ever need to be filled? 
Does the cat ever have toothache? 
2. For another lesson get reports from the 
children in regard to the dog’s teeth, comparing 
every point with that of the cat. 
3. A third conversation may be based upon the 
horse’s teeth. His manner of eating. What he 
eats, different kinds of teeth, color, etc. Tell the 
children to throw a piece of meat to the dog, a hand¬ 
ful of oats to the horse and an ear of corn to the 
cow and watch them eat. Are the teeth fitted in 
each case for the work they have to do? Why do 
they not feed oats to the dog, and meat to the 
horse? Do horses, cows and dogs often have the 
toothache? I wonder why. 
4. For a fourth conversation the children may 
now be interested in their own teeth, a . As to 
number, b. As to kind, temporary and permanent. 
c. How many are like the dog’s teeth? How many 
like the horse’s teeth? Then can a boy bite like a 
dog and also grind or chew like a horse? What 
food can a boy eat ? Will a dog eat every kind of 
