. The brain as an organ of mind. Brain; Thought and thinking; Brain. CaAP. XXL] OF THE HUMAN BRAIN 391 educated person and because it presented a well-marked complicacy of its convolutions, with the view of subse- quently comparing it T\ith that of the recently-deceased Mathematician. In both these brains, as well as in that of Gauss, the fissures of Rolando are very sinuous, owing to the exist- ence of many secondary foldings of the ascending frontal and parietal convolutions.* The relative position o^ these. Fig. 143.—Front view of Frontal Lobes of the Brain of a Journalist, showing the extr
. The brain as an organ of mind. Brain; Thought and thinking; Brain. CaAP. XXL] OF THE HUMAN BRAIN 391 educated person and because it presented a well-marked complicacy of its convolutions, with the view of subse- quently comparing it T\ith that of the recently-deceased Mathematician. In both these brains, as well as in that of Gauss, the fissures of Rolando are very sinuous, owing to the exist- ence of many secondary foldings of the ascending frontal and parietal convolutions.* The relative position o^ these. Fig. 143.—Front view of Frontal Lobes of the Brain of a Journalist, showing the extreme complicacy of its Convolutions. Owing to slight obliquity of position, the right Frontal Lobe is more fully shown than the left, (Accurately drawn by V. Horsley, from a photograph.) fissures was, however, very different in the two brains, and in that of the Journalist the distance of the lower end of the fissure of Rolando from the tip of the temporal lobe was altogether remarkable. As a consequence apparently of a blindness of the right eye, dating from a few days after birth, the left Cerebral Hemisphere of De Morgan's brain was notably * ISo bridge-like convolution was to be seen crossing the fissure of Rolando in either brain. On the right side, but not on the left, and this only in the brain of De Morgan, the fissure of Eolando opened into the fissure of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bastian, H. Charlton. N. Y. , Appleton
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