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GREEK AS INTERNATIONAL LANGUAGE. 26 1 many more, have discovered for ourselves in- stinctively, is really pointed out as being unmis- takably the best when we consider certain facts of physiological anatomy and pathology of the brain. From the ways in which the use of the language is lost, or suffers varying degrees and kinds of impairment, we can learn how it best may be acquired. Monographs, above all Kuss- maul's philosophical and elaborate work on the disturbance of speech, numerous articles in our medical periodicals, and special chapters in our text-books on nervous diseases, treat on the de- fects of speech in their relation to neuropath- ology. The first to apply the recent discoveries in this direction to the methods of learning and teaching languages was Dr. Howel T. Persh- ing. He has expounded his views in an article entitled "Language and Brain Disease,'" which appeared in the Popular Science Monthly for October, 1892. I may be permitted to give an abstract of this most valuable paper : All the motions and sensa- tions of the various parts of the body have their centres in the brain. Four centres are espe- cially concerned in the use of language: the auditory centre, by which words are heard ; the motor-speech centre, which excites and controls