Wülfert and Huber, the third left frontal convolution was greatly developed with numerous meanderings. In Gambetta this exaggeration became a real doubling; and the right quadrilateral lobule is divided into two parts by a furrow which starts from the occipital fissure; of these two parts the inferior is subdivided by an incision with numerous branches, arranged in the form of stars, and the occipital lobe is small, especially on the right.[1]
“The comparative study of these brains," writes Hervé,[2] shows that individual variations of the cerebral convolutions arc more numerous and more marked in men of genius than in others. This is especially the case in regard to the third frontal convolution which is not only more variable in men of genius, but also more complex, especially on one side, while in ordinary persons it is very simple both on the left and on the right. Without doubt the individual arrangements which may be presented by the brains of men of remarkable intelligence may also be found in ordinary brains, but only in rare. exceptions.”
I refer those who wish to form an idea of the development reached by Broca’s centre in some of the brains of the Munich collection to Rüdinger’s monograph, and to the beautiful plates which accompany it. One remarks especially the enormous size and the numerous superficial folds at the foot of the left convolution in the jurist. Wülfert, who was remarkable among other qualities for his great oratorical talent. On the other hand, the convolution is much reduced and very simple on the left, much developed in all its parts on the right, in the brain of the pathologist Buhl, a professor whose speech was clear and facile, but who was left-handed, or at all events ambidextrous. To these facts others may be added, showing the morphological complexity of Broca's convolution in distinguished men; in the brains, for instance, of various men of science, described and figured by R. Wagner.[3] Among these was the illustrious geometrician, Gauss: compared with Gauss's brain that of an artisan called
