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The physiognomical system of Drs. Gall and Spurzheim; founded on an anatomical and physiological examination of the nervous system in general, and of the brain in particular; and indicating the dispositions and manifestations of the mind / Being at the same time a book of reference for Dr. Spurzheim's demonstrative lectures.

  • Spurzheim, J. G. (Johann Gaspar), 1776-1832
Date:
1815
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Licence: Public Domain Mark

Credit: The physiognomical system of Drs. Gall and Spurzheim; founded on an anatomical and physiological examination of the nervous system in general, and of the brain in particular; and indicating the dispositions and manifestations of the mind / Being at the same time a book of reference for Dr. Spurzheim's demonstrative lectures. Source: Wellcome Collection.

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    animals have a commissure of the part which I have called fundamental portion, independent of the commissure of the lateral parts. ‘This commissure is formed by the soft and fine fibrous layers from the superior and inferior parts of the fundamental portion, commonly called the superior and inferior valves. COMMISSURES OF THE BASIS OF THE BRAIN. The uniting fibres of the inferior convolutions of the posterior lobe, and those of the posterior con- volutions of the middle lobe, bend behind the crura of the brain, and behind the pretended optic tha- lami, go from every side toward the middle line in an oblique direction, and are joined together. ‘The internal convolutions of the posterior lobe give off the uniting fibres, which are named the posterior fold of the corpus callosum, the other uniting fibres of these convolutions form the fornix with its lyra or psalterium, which, according to anatomists, is composed of both the lateral parts of its lower sur- face. ‘The uniting fibres of the anterior convolu- tions of the middle lobe form the nervous cord which passes through the corpora striata without being adherent, and both sides present, in man, the figure of a bow, the convex part of which is directed forward. ‘The direction of this bow is quite oppo- site in animals ; in them the convex part is directed backward. Anatomists called this cord commissura anterior (Pi. II. fig. 2. 61). The inferior convolu- tions of the anterior lobes have their: commissures