. The brain as an organ of mind. Brain; Thought and thinking; Brain. Chap. XXV.] PHRENOLOGY: OLD AND NEW. 539 As regards the establishment of the existence or absence of Tactile Sensibility in an animal under observation, the same kind of difficulty is encountered as in regard to the other senses, owing to the uncertainty besetting the dis- crimination of a mere reflex reaction to stimulation, from one which has resulted from a conscious Perception. Ferrier therefore '' endeavoured to apply such tests as might clearly distinguish betw^een the two cases, relying more on the evidence furnished b
. The brain as an organ of mind. Brain; Thought and thinking; Brain. Chap. XXV.] PHRENOLOGY: OLD AND NEW. 539 As regards the establishment of the existence or absence of Tactile Sensibility in an animal under observation, the same kind of difficulty is encountered as in regard to the other senses, owing to the uncertainty besetting the dis- crimination of a mere reflex reaction to stimulation, from one which has resulted from a conscious Perception. Ferrier therefore '' endeavoured to apply such tests as might clearly distinguish betw^een the two cases, relying more on the evidence furnished by the spontaneous. Fig. 177.—Internal Aspect of the right Hemisphere of the Brain of a Monkey, showing a darkly shaded area corresponding with the so-called ' Tactile Centre,' and, by dotted lines, the direction in which an instrument was inserted for the destruc- tion of this area. (Ferrier.) activity of the animal than on mere response to cutaneous ; He operated upon a Monkey which was in the main left- handed, that is, one which took things offered to it pre- ferably mth the left hand. " For this reason the right hippocampal region was destroyed, with the view of affect- ing the sense of touch in the limb which the animal usually em^; The results are thus described.^' " After recovering from the operation and the narcotic stupor, sight and hearing were found to be unimpaired, and the intelligence quick and active as before. But cutaneous stimulation by pricking, * Loc. cit. p. 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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