But the role of the child in the development of language is concerned with other things than physonyms and onomatopes. In his work on Brazilian ethnography and philology, Dr. von Martius writes (522. 43): "A language is often confined to a few individuals connected by relationship, forming thus, as it were, _a family institute_, which isolates those who use it from all neighbouring or distant tribes so completely that an understanding becomes impossible." This intimate connection of language with the family, this preservation and growth of language, as a family institution, has, as Dr. von Martius points out, an interesting result (522. 44):-- "The Brazilians frequently live in small detachments, being kept apart by the chase; sometimes only a few families wander together; often it is one family alone. Within the family the language suffers a constant remodelling. One of the children will fail to catch precisely the radical sound of a word; and the weak parents, instead of accustoming it to pronounce the word correctly, will yield, perhaps, themselves, and adopt the language of the child. We often were accompanied by persons of the same band; yet we noticed in each of them slight differences in accentuation and change of sound. His comrades, however, understood him, and they were understood by him. As a consequence, their language never can become stationary, but will constantly break off into new dialects." Upon these words of von Martius (reported by Dr. Oscar Peschel), Dr. Charles Rau comments as follows (522. 44): "Thus it would seem that, among savages, _children_ are to a great extent the originators of idiomatic diversities. Dr. Peschel places particular stress on this circumstance, and alludes to the habit of over-indulgent parents among refined nations of conforming to the humours of their children by conversing with them in a kind of infantine language, until they are several years old. Afterward, of course, the rules of civilized life compel these children to adopt the proper language; but no such necessity exists among a hunter family in the primeval forests of South America; here the deviating form of speech remains, and the foundation of a new dialect is laid." _Children's Languages._ But little attention has been paid to the study of the language of children among primitive people. In connection with a brief investigation of child-words in the aboriginal tongues of America, Mr. Horatio Hale communicated to the present writer the following observation of M. l'Abbé Cuoq, of Montreal, the distinguished missionary and linguist: "As far as the Iroquois in particular are concerned, it is certain that this language [langage enfantin] is current in every family, and that the child's relatives, especially the mothers, teach it to their children, and that the latter consequently merely repeat the words of which it is composed" (201. 322). That these "child-words" were invented by children, the Abbé does not seem to hint.