On Thermal Influences proceeding from the Hemispheres of the Cerebrum (Vaso-motor apparatus of the Cerebrum).—Drs. Eulenburg and Landois (“Centralblatt,” No. 15, 1876) operated on dogs, and they found that young animals were specially well suited for their purpose. The estimation of the temperature was taken thermo-electrically by means of a Meissner-Meyerstein's electro-galvanometer, As thermo-electrical elements, two varnished Dutrochet needles were employed. After opening the skull and exposing the surface of the brain, the grey matter was destroyed by means of red-hot copper wires to the depth of 1.1½m.m. The animals were kept deeply under chloroform. When a certain portion of the brain was to be stimulated, the animal was curarised, and the brain was stimulated by induction shocks, two fine platinum wires serving as electrodes. The chief results were the following:—
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