A knowledge of the sociol'al aspect of a language community is necessary to understand its language and to be able to translate into its language. Conversely, lexical peculiarities in its historical development provide data concerning the sociol'al development of a community. There are other linguistic features, however, which can be of great soc significance, such as deviations in idiom, & in pronunciation. These can be described only by a trained linguist; the diff's are mostly very subtle. Little systematic work has been done in this field, perhaps because the phenomena are too short-lived & ephemerous to attract the linguist, & he does not always quite know where to 'place' them in the soc scheme. Yet it would be worth-while paying more attention to them, because of their sociol'al & linguistic significance. For among the deviations to today are the rules of tomorrow. Tracing the deviations may eventually give us an insight into the constellation of factors which make a language Into what it is at any one moment. The linguist & the sociol'st have to cooperate. AA.
