Page:Popular Science Monthly Volume 26.djvu/768

 pupil, the head turns in the direction of the eyes, and the ears are thrown back.

When the testes are stimulated, the same results follow, but with the striking addition that, upon the least touch of the electrodes, cries are produced which change from a brief bark to all kinds of sounds as the stimulation is continued.

The opinion has been held by many, and is explicitly stated by Austin Flint, that "the optic lobes serve as the sole centers presiding over the sense of sight, and not merely as avenues of communication of this sense to the cerebral hemispheres." When Flint gives as "positive"

 the celebrated Mathematician and Astronomer, upper aspect. (Sharpey, after R. Wagner.) l l, longitudinal fissure; a, a', a", upper, middle, and lower frontal convolutions; A, A, ascending; frontal convolution; r, r, fissure of Rolando; B. B. ascending parietal convolutions; b, b, parietal lobule; b", supra-marginal lobule; c, c', first or upper temporal convolution; p, perpendicular (or parieto-occipital) fissure; d, d', d" upper, middle, and lower occipital convolutions.

proof of his conclusion the statement that "the sense of sight is preserved after complete removal of the cerebrum," he shows how easily it is possible to give, as proof of a conclusion, the conclusion itself. The thing to be determined is, that the actions displayed after removal of the cerebrum are accompanied by any form of consciousness. While it can not be shown that they are not, it is equally impossible to show that they are. The conclusion of Wundt may be the correct one, viz., that these activities are no more designed or conscious than those reflex movements which we know to be produced by the spinal cord.