97. _In what words is V silent?_ Sevennight and twelvemonth.
98. _In what word is Z silent?_ Rendezvous.
99. _What letters are never doubled?_ X and H.
100. _How many words contain all the vowels in regular order?_ Two.
101. _What are they?_ Abstemious and Facetious.
102. _What is a Diphthong?_ Two vowels sounded together in the same syllable.
103. _Name the Diphthongs._ Ou, Ow, Oi, and Oy.
104. _How many sounds do they represent?_ Two.
105. _What are the sounds called?_ Diphthongal sounds.
106. _How many kinds of Diphthongs are there?_ Two.
107. _What are they?_ Separable and Inseparable.
108. _Which ones are Separable?_ Oi and Oy.
109. _What is an Improper Diphthong?_ The union of two vowels in a syllable, one of which is silent.
110. _By what other name are they known?_ Digraph.
111. _How many Digraphs are there?_ Twenty-five.
112. _Name them._ Aa, Ae, Ai, Ao, Au, Aw, Ay, Ea, Ee, Ei, Eo, Eu, Ew, Ey, Ie, Oa, Oe, Oi, Oo, Ou, Ow, Ua, Ue, Ui, and Uy.
113. _What is a Trigraph?_ A union of three vowels in one syllable, two of which are silent, or all three representing one sound.
114. _How many Trigraphs are there?_ Eight.
115. _Name them._ Awe, Aye, Eau, Eou, Eye, Ieu, Iew, and Uoi.
116. _What is a Tetragraph?_ Union of four vowels in one syllable.
117. _How many Tetragraphs are there?_ One.
118. _What is it?_ Ueue in the word Queue.
119. _May the terms Digraph, etc., be used with the Consonants?_ They may.
120. _Give example of Consonant Digraph._ Gh, in the word laugh.
121. _Give example of Consonant Trigraph._ Thr, in the word throw.
122. _Give example of Consonant Tetragraph._ Phth, in the word phthisic.
123. _What is a regular Triphthong?_ A vowel trigraph in which all three of the vowels are sounded.
124. _Give an example._ Quoit.
ORTHOEPY.
1. _What is Orthoepy?_ That science which treats of the elementary sounds and the p.r.o.nunciation of words.
2. _What is Phonology?_ The science of the elementary sounds uttered by the human voice in speech.
3. _What is an Elementary sound?_ One that cannot be divided so as to be represented by two or more letters.
4. _What is Sound?_ A sensation produced on the auditory nerve by the rapid vibratory motion of any elastic substance.
5. _What is the least number of vibrations that will produce an audible sound?_ Sixteen per second.
6. _What is the greatest number that can be heard?_ About forty thousand per second.
7. _What is Voice?_ Sound produced by the vocal chords.
8. _What is an Articulate sound?_ One made by the organs of speech and used in language.
9. _What is a Vocal sound?_ One that is modified but not obstructed by the articulatory organs.
10. _What is a simple Vocal sound?_ One made without any change in the position of the articulatory organs during its emission.
11. _What is a Coalescent?_ An articulate sound that always precedes and unites with a vocal.
12. _What is a Guttural sound?_ One that is modified by the soft palate.
13. _What are Unarticulate sounds?_ The sounds of the vowels.
14. _How many Elementary sounds do the vowels represent?_ Fifteen.
15. _How many do the Consonants represent?_ Eighteen.
16. _How many do the Combinations represent?_ Seven.
17. _How many do the Diphthongs represent?_ Only one, as oi and oy only repeat sounds already represented by a and i.
18. _How many sounds has A?_ Five.
19. _What are they?_ Long, Short, Medial, Flat, and Broad.