Onomatopoieia, theory of, [358].
Ophir of the Bible, [203].
Origen, his opinion that Hebrew was the primitive language of mankind, [132].
Origin of language, consideration of the problem of the common, [326] et seq.
Ormuzd, the god of the Zoroastrians, mentioned by Plato, [207].
discovery of the name Auramazda in the cuneiform inscriptions, [207].
origin of the name Auramazda or Ormuzd, [207].
Os, the, of Ossethi, calling themselves Iron, [243].
Oscan language and literature, the [196].