PRACTICAL QUESTIONS.
1. Why does a dry, cold atmosphere favorably affect catarrh?
2. Why should we put on extra covering when we lie down to sleep?
3. Is it well to throw off our coats or shawls when we come in heated from a long walk?
4. Why are close-fitting collars or neckties injurious?
5. Which side of the heart is the more liable to inflammation?
6. What gives the toper his red nose?
7. Why does not the arm die when the surgeon ties the principal artery leading to it?
8. When a fowl is angry, why does its comb redden?
9. Why does a fat man endure cold better than a lean one?