Phonetic law: 
  basis of,
  direction of,
  examples of,
  influence of, on morphology,
  influence of morphology on,
  regularity of,
  significance of,
  spread of, slow,
  See Leveling, phonetic; Pattern, phonetic. 
Phonetic processes,
  form caused by, differences of,
  parallel drifts in,
Pitch, grammatical use of,
  metrical use of,
  production of,
  significant differences in,
Plains Indians, gesture language of,
“Plattdeutsch,”
Plurality: 
  classification of concept of, variable,
  a concrete relational category,
  a derivational or radical concept,
  expression of, multiple,
  See Number. 
Poles,
Polynesian,
Polynesians,
Polysynthetic languages,
Portuguese,
Predicate,
Prefixes,
Prefixing languages,
Preposition,
Psycho-physical aspect of speech,
Pure-relational languages,
  complex,
  simple,

Q

Qualifying concepts.  See Concepts, derivational. 
Quality: 
  of speech sounds,
  of individual’s voice,
Quantity of speech sounds,

R

Race,
  language and, lack of correspondence between,
  language and, theoretical relation between,
  language as correlated with, English,
  language, culture and, correspondence between,
  language, culture and, independence of,
Radical concepts.  See Concepts. 
Radical element,
Radical word,
“Reading from the lips,”
Reduplication,
Reference, definite and indefinite,
Repetition of stem,
  See Reduplication. 
Repression of impulse,
Rhyme,
Rolled consonants,
Romance languages,
Root,
Roumanian,
Rounded vowels,
Russian,

S

Sahaptin languages (N.  Amer.),
Salinan (S.W.  California),
Sanskrit (India),
Sarcee Indians,
Saxon: 
  Low,
  Old,
  Upper,
Saxons,
Scandinavian,
  See Danish; Icelandic; Swedish. 
Scandinavians,
Scotch,
Scotch, Lowland,
Semitic languages,
Sentence,
  binding words into, methods of,
  stress in, influence of,
  word-order in,
Sequence.  See Order of words. 
Shakespeare: 
  art of,
  English of,
Shasta (N.  California),
Shilh (Morocco),
Shilluk (Nile headwaters),
Siamese,
Singing,
Siouan languages (N.  Amer.),
Sioux (Dakota),
Slavic languages,
Slavs,
Somali (E.  Africa),
Soudanese languages,
Sound-imitative words,
Sounds of speech,
  adjustments involved in, muscular,