Note 4 — Chapter III · ON SOUND-CHANGE.

This factor in the change of language (which has only recently received investigation) cannot here be dwelt upon, as readers who have not studied phonetics would be unable to follow the argument. Such should at once endeavour to obtain at least a mastery of the elements of phonetics, without which they cannot possibly understand many of the problems with which we have here to deal, and all should then read the very interesting article on Phonetic Compensations, by C. W. Grandgent and G. S. Sheldon of Harvard University, in Modern Language Notes, June, 1888, No. 6, pp. 177-187.