Volume 1
A textbook of pathology : systematic & practical.
- Hamilton, David James.
- Date:
- 1889-94
Licence: Public Domain Mark
Credit: A textbook of pathology : systematic & practical. Source: Wellcome Collection.
Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.
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![surface. The number of incisions, and where they ought to pass through, depend very much on what parts one wants to expose. For ordinary purposes, however, the brain may be sliced through the following seven localities. It will be found that the sections thus made expose the parts of greatest importance.^ Section I. (see Fig. 5) runs through the anterior half of the third frontal convolution and exposes the tractus internus, medius, and externiis (seen on left side), and the oval-shaped area (seen on the right.'’) Section II. (see Fig. G) runs through the tip of the temporo- sphenoidal lobe and operculum. It shows the heads of the caudate and lenticular nuclei with the inner capside separating them, the Fig. (3.—Perpendicular Transverse Section ok Human Brain—Sect. 11. island of Beil and unnamed white substance belonging to it, the corpus callosum and septum lucidum, with the fifth ventride. The figure also displays one of the roots of origin of the olfactory, and the nipple-like process of gray matter to which the olfactory tract becomes attached in the sulcus olfactorius. The temporo-sphenoidal lobe is still disjoined at this level from the rest of tlie brain. Section III. (see Fig. 7) is made immediately in front of the J The accoiiijKinying figures of tlie ]iarts seen in these sections were drawn from pre- parations made by the autlior’s gelatine-potash method. They were all traced upon gelatinised glass from the preparations themselves, and can be relied upon as faithful representations. - For explanation of these terms, see author’s paper on the “Corpus Callosum in the Adult,” in the Journal of Anatomy and Physiology vol. xix.](https://iiif.wellcomecollection.org/image/b24990607_0001_0052.jp2/full/800%2C/0/default.jpg)
