14. Why is not the act of tasting complete until we swallow?
15. Why do all things have the same flavor when one's tongue is "furred" by fever?
16. Which sense is the more useful—hearing or sight?
17. Which coat is the white of the eye?
18. What makes the difference in the color of eyes?
19. Why do we snuff the air when we wish to obtain a distinct smell?
20. Why do red-hot iron and frozen mercury (-40°) produce the same sensation?
21. Why can an elderly person drink tea which to a child would be unbearably hot?
22. Why does an old man hold his paper so far from his eyes?
23. Would you rather be punished on the tips of your fingers than on the palm of your hand?