. The brain as an organ of mind. Brain; Thought and thinking; Brain. 402 THE EXTERNAL CONEIGURATION on the right side than on the left is by no means clear. It might perhaps be occasioned by the slightly increased length of the left Hemisphere, ]3ressing backwards against the left side of the ' torcular,' and so diverting a larger current of the blood flowing along the longitudinal sinus towards the right. It has been long known, indeed, that the groove in the occipital bone for the right 'lateral sinus' is often distinctly broader than that for the left sinus,*—. Fig. 147.—View of Occipital L
. The brain as an organ of mind. Brain; Thought and thinking; Brain. 402 THE EXTERNAL CONEIGURATION on the right side than on the left is by no means clear. It might perhaps be occasioned by the slightly increased length of the left Hemisphere, ]3ressing backwards against the left side of the ' torcular,' and so diverting a larger current of the blood flowing along the longitudinal sinus towards the right. It has been long known, indeed, that the groove in the occipital bone for the right 'lateral sinus' is often distinctly broader than that for the left sinus,*—. Fig. 147.—View of Occipital Lobes and of Cerebellum from behind, showing the * Occipital Groove' at the tip of the right Hemisphere. (From a drawing by V. Horsley.) 1, The Groove; 2, 2, External Perpendicular Fissure. c, c, The Cerebellum. thus conclusively showing that in all such cases, at least, the larger blood current is accustomed to pass away from the cranium along this side. (4.) The left Hemisphere was said by Dr. Boyd to be generally heavier than the right by nearly half an ounce. This, however, has been questioned by some investigators, * See fig. 23 of Gray's "Anatomy" (3rd. Edn.), where this condition is well 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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