21. What are the joys of Wordsworth’s ‘Lucy’?

22. Show the danger of stuffy rooms.

23. What principle must regulate ventilation?

24. Why is night air wholesome?

25. Upon what physical facts does the need of sunshine depend?

26. Show that the skin does much scavenger’s work.

27. Why do persons die of external scalds or burns?

28. Why is a daily bath necessary?

29. Give some instructions for clothing children.

VII. ‘The Reign of Law’ in Education