Abstract
Under the traditional titles of Assimilation and Dissimilation, we are presented with two linguistic phenomena apparently involving a principle similar to that which is known in physical science as ” action at a distance ”—-regularly in the latter case, occasionally in the former (under special titles, such as “dilation”, “Fernassimilation”). The classical example of this type of assimilation is provided by the Sanskrit “cerebralization” (nati) of n, with reference to which the term “action à distance” has, in fact, been used. In connection with the physical principle, it may be of interest to recall Newton's words:—“It is inconceivable that inanimate brute matter should, without the mediation, of something else which is not material, operate upon and affect other matter without mutual contact.”Speech-sound, of course, is not “brute matter”, and it would be a dangerous and unnecessary principle to submit linguistics to physical criteria, but Newton's uneasiness may at least serve to lead us to a reconsideration of similar postulates of our own science. Amongst these the conception of an articulation A at one point in the temporal dimension exercising a form of “gravitational influence” upon an articulation B at a distant point would appear to be one that is only tolerable faute de mieux.The whole principle of assimilation in descriptive linguistics has already been assailed more than once, on the ground that the implied change is only metaphorical, having reference to a hypothetical “basic” form derived from the consideration of other contexts or of earlier stages of the language, and leading to such definitions as “the extension of an element of articulation out-side its proper sphere”.

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