Thus it is evident that he recognized the structure behind the external angle of the eye as an important part of the organ of language.
The interior portion of the convolution is the more intellectual portion of the organ, while the exterior portion is that which holds the closest relation to the fibres of the _corpora striata_ in the middle lobe, and may therefore most properly be called the organ of language or of speech, the impairment of which produces aphasia, or loss of speech. This is the form which has chiefly attracted the attention of the medical profession, as it very often accompanies paralytic affections from disease of the _corpora striata_.
Evidently Gall arrived at the correct location, and he illustrates the discovery by referring to a great number of authors and scientists whose development he observed. His most decisive fact is the case of a patient who lost the memory of names entirely, but not the power of speech, by a thrust from a foil, which penetrated through the face, the posterior inner part of the front lobe, at its junction with the middle lobe, thus wounding the internal part of the organ of language, but not reaching the outer posterior part, at the island of Reil, to which pathologists have given their chief attention.
Evidently Gall had the correct idea, and should have been duly credited by the pathologists who have verified his discovery.
In verifying this discovery by excitement of the organs, I find the centre of language behind the external angle of the eye, on each side of which, toward the nose and toward the temples, are analogous functions which might, if we did not analyze closely, be included with it, as portions of the organ of language.
The discoveries of Gall, though no longer sustained by colleges or phrenological societies, have never lost their hold upon the students who follow his teachings and study nature. A few phrenological writers and lecturers maintain the interest among those they reach, but our standard literature generally ignores the doctrines, and forgets the name of Gall. Yet the eclipse is not total. It will pass away as this century ends, and the fame of the great pioneer in science will be immortal, for it rests not on any wave of eighteenth century opinion, but is based on that which is "immutable and eternal."