The Classification of Languages 213 be as many as twenty, as in Bantu dialects, or it may be as few as four,, as m one of the dialects of the Australian aborigines. The classificatory mark is not necessarily a prefix. In the Papuan language cited by Capell, it is a suffix like the gender-terminal of an Aryan adjective Thus the distinction between the classificatory and the flexional type is not so sharp as it first seems to be The trade-mark of the Indo- European adjective as a separate entity is that it carries the suffix determined by one of the three gender-classes to which a noun is assigned We know that what are called adjectives in Aryan languages were once indistinguishable from nouns, and the example of Finnish (p 197) shows us how easily the ending of the noun gets attached to an accompanying epithet In each of the three Aryan gender-classes we meet with a greater or less proportion of nouns with characteristic affixes limited to one of them, and the notion of sex which an American or an Englishman associates with gender has a very flimsy relation to the classification of Indo-European nouns in their respective gender-classes. Though we have no first-hand knowledge about the origin of gender, we know enough to dismiss the likelihood that it had any essential connexion with sex The most plausible view is that the distinction of gender in the Indo-European family is all that is left of a system of suffixes essentially like the Bantu prefixes If so, the former luxuriance of such a system has been corroded in turn by nomadic habits and civilized hving as primitive Aryan-speaking tribes successively came into contact with new objects which did not fit into the framework of a classification suited to the limited experience of settled life at a low level of technical equipment PHONETIC PATTERN OF LANGUAGE FAMILIES Just as we recognize grammatical processes such as isolation, aggluti- nation, amalgamation, root-inflexion, we can also recognize sound- patterns which predominate in one or other group Such phonetic patterns furnish us with an additional clue to linguistic affinities, albeit a clue which too few philologists have followed up Our last sec- tion illustrates one phonetic type which is distributed over a large part of the world In a multitude of unrelated languages, including Japanese, Malayo-Polynesian, and Bantu dialects, agglutinative regularity coexists with a sound-pattern quite unlike that of our own language or of any languages related to it Jespersen (Growth and Structure of the English Language) illustrates the contrast by the following passage from the