impossible in gesture-language. If, then, gesture-language affords us certain psychological conclusions regarding the nature of a primitive language, it is of particular interest, from this point of view, to compare its characteristics with the corresponding traits of the most primitive spoken languages. As already stated, the so-called Soudan languages typify those that bear all the marks of relatively primitive thought. These languages of Central Africa obviously represent a much more primitive stage of development than do those of the Bantu peoples of the south or even those of the Hamitic peoples of the north. The language of the Hottentots is related to that of these Hamitic peoples. It is, in fact, because of this relationship, and also because of characteristics divergent from the negro type, that the Hottentots are regarded as a race that immigrated from the north and underwent changes by mixture with native peoples. If, now, we compare one of the Soudan languages, the Ewe, for example, with gesture-language, one difference will at once be apparent. The words of this relatively primitive spoken language do not possess the qualities of perceptibility and immediate intelligibility that characterize each particular gesture-sign. This is readily explicable as a result of processes of phonetic change, which are never absent, as well as of the assimilation of foreign elements and of the replacement of words by conceptual symbols that are accidental and independent of the sound. These changes occur in the history of every language. Every spoken language is the outcome of recondite processes whose beginnings are no longer traceable. And yet the Soudan languages, particularly, have preserved characteristics that show much more intimate connections between sound and meaning than our cultural languages possess. The very fact is noteworthy that certain gradations or even antitheses of thought are regularly expressed by gradations or antitheses of sound whose feeling tone plainly corresponds to the relation of the ideas. While our words 'large' and 'small,' 'here' and 'there,' show no correspondence between the character of the sound and the meaning, the case is entirely different with the equivalent expressions in the Ewe language. In this language large and small objects are designated by the same word. In the one case, however, the word is uttered in a deep tone, while in the other a high tone is used. Or, in the case of indicative signs, the deep tone signifies greater remoteness, the high tone, proximity. Indeed, in some Sudan languages three degrees of remoteness or of size are thus distinguished. 'Yonder in the distance' is expressed by a very deep tone; 'yonder in the middle distance,' by a medium tone; and 'here,' by the highest tone. Occasionally, differences of quality are similarly distinguished by differences of tone, as, for example, 'sweet' by a high tone, 'bitter' by a deep tone, 'to be acted upon' (that is, our