29. Why is a slight blow on the back of a rabbit's neck fatal?
30. Why can one walk and carry on a conversation at the same time?
31. What are the dangers of overstudy?
32. What is the influence of idleness upon the brain?
33. State the close relation which exists between physical and mental health and disease.
34. In what consists the value of the power of habit?
35. How many pairs of nerves supply the eye?
36. Describe the reflex actions in reading aloud.
37. Under what circumstances does paralysis occur?
38. If the eyelids of a profound sleeper were raised, and a candle brought near, would the iris contract?