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Updated: May 19, 2025
Our power of measuring time without instruments is probably based upon the cerebral system of each individual being accustomed to move at a uniform rate. Experience has taught the brain that it thinks so many thoughts or does so much work in such a length of time, and it judges that so much time has elapsed when it has done so much work.
During this whole time I had been raving under a cerebral fever, death hovering over me. It appears that I had received a coup-de-soleil, in addition to my other mischances. When I returned to consciousness, I was astonished to see Gabriel and Roche by my side; the expedition had returned triumphant.
The cranium had been smashed open by some blunt instrument, leaving the naked brains exposed, and the cerebral matter had suffered deep abrasions. Blood clots had formed in this dissolving mass, taking on the color of wine dregs. Both contusion and concussion of the brain had occurred. The sick man's breathing was labored, and muscle spasms quivered in his face.
The images that may thus emerge from the brain have been classed by physiologists among the phenomena of inverse vision, or cerebral sight. Of these there are multitudes who have been shut out from all communion with civilized countries, who have never been enlightened by revelation, and who are mentally incapable of reasoning out for themselves arguments in support of those great truths.
We can therefore explain well enough, by the general laws of adaptation, the reason of the absence of what might be called "cerebral sensibility," but, here as elsewhere, the question of the "Why" is much easier to solve than that of the "How."
The nervous masses in question are well developed in animals in whom the cerebral hemispheres, or organs of intellection, are comparatively rudimentary; and in these same animals, while little or no capacity for abstract reasoning exists, the instincts and feelings attain individuality and intensity. 2d.
It is admitted that to some psychical states of a limited kind certain cerebral states do correspond, but we have no warrant whatever for concluding that, because the physiological and the psychological series exhibit some corresponding terms, the two series are absolutely parallel. The cases which are parallel are limited, and involve facts which are independent of the power of the Will.
In fact, the ganglionic corpuscles of each eye may be considered as constituting a little brain, connected with the masses behind by the commissure, commonly called the optic nerve. We are prepared, therefore, to find these two little brains in the most intimate relations with each other, as we find the cerebral hemispheres.
Another must have two pawns. Another, "pawn and two," or one pawn and two moves. Then we find one who claims "pawn and move," holding himself, with this fractional advantage, a match for one who would be pretty sure to beat him playing even. So much are minds alike; and you and I think we are "peculiar," that Nature broke her jelly-mould after shaping our cerebral convolutions.
"Concerning the matter of high blood pressure," writes Hare, "independent of cerebral lesions, the longer I study the matter the more convinced I am that this blood pressure is devised by nature to compensate for fibroid changes in peripheral vessels, in order that tissues which would otherwise be cut off from adequate blood supply may receive plenty of blood, and I consider it one of the most vital points to ascertain whether a pressure is what may be called the patient's pathological norm, that is, the pressure which is required in the face of vascular changes, or whether this pressure is in excess of his pathological norm.
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