6. What is meant by good usage?
  The usage, or custom, of the best speakers and writers of the times.

  7. How do we know when we have spelled a word correctly?
  By reference to the Dictionary?

  8. What is a Lexicographer?
  An author of a dictionary.

  9. Can we spell by Rules?
  We cannot.

  10. Why?
  Because there are too many exceptions.

  11. What makes a rule in Orthography?
  Whenever a letter is silent, or usually so, a rule is formed.

  12. Why is c placed before r in acre, massacre, etc.?
  To preserve the hard sound of c.

  13. What is the rule for Digraphs?
  A digraph must have one vowel silent.

  14. Give rule for E final.
  E final is silent when another vowel precedes it in the same
          syllable.

  15. What effect does final E have on the preceding vowel?
  It usually preserves its long sound.

  16. When is B silent?
  Before t, or after m, in the same syllable.

  17. When is C silent?
  Before k in the same syllable; also, before z, l, or
  t, in a few words.

  18. When is D silent?
  Before g in the same syllable.

  19. When is G silent?
  Before m or n in the same syllable.

  20. When is H silent?
  After g or r in the same syllable; and h final after a
          vowel is always silent; also, in a few words after t, and
          initial in a few words.

  21. When is L silent?
  After a when followed by f, m, k, or v, except in the
          word valve; also, before d in could, etc.

  22. When is M silent?
  Before n in a few words.

  23. When is N silent?
  Final after l or m.

  24. When is P silent?
  Initial before n, s, or t.

  25. When is S silent?
  In a few irregular words; as, isle, puisne, viscount,
          corps, etc.

  26. When is T silent?
  Before ch in the same syllable; also, in Christmas, eclat,
          mortgage, etc.

  27. When is V silent?
  In two words only—­Sevennight and Twelvemonth.

  28. When is W silent?
  Before r in the same syllable also, in whoop, sword, two,
          etc.

  29. When is Gh silent?
  After i in the same syllable; also, after au and ou in some
          words.

  30. When is Ch silent?
  In a few words; as, drachm, yacht, etc.