Radical relationship of languages, [176].

Radicals. See [Roots].

Rask, Erasmus, his studies of Zend, [167], [206].

Raven, the word, [362].

Raynouard, his labors in comparative grammar, [171].

criticisms of his theory of the Langue Romane, [171].

Realism and Nominalism, controversy between, in the Middle Ages, [22].

Regeneration, dialectical, one of the processes which comprise the growth of language, [58].

Respectable, origin of the word, [256].

Reval dialect of Esthonian, [318].