Archive image from page 722 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana03todd Year: 1847 'ii 555=3 .'.: • , ' T / • Transverse section of the medulla oblongata through the lower third of the olivary bodies. (From Stilling.) Magnified ten diameters. a, anterior fissure ; 6, fissure of the calamus scriptorius; c, raphe; d, anterior columns; e, lateral columns ; f, posterior columns ; g, nucleus of the hypoglossal nerve, containing large vesicles ; h, nucleus of the vagus nerve ; i, i, gelatinous substance ; k, h, roots of the vagus nerve ; I, roo
Archive image from page 722 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana03todd Year: 1847 'ii 555=3 .'.: • , ' T / • Transverse section of the medulla oblongata through the lower third of the olivary bodies. (From Stilling.) Magnified ten diameters. a, anterior fissure ; 6, fissure of the calamus scriptorius; c, raphe; d, anterior columns; e, lateral columns ; f, posterior columns ; g, nucleus of the hypoglossal nerve, containing large vesicles ; h, nucleus of the vagus nerve ; i, i, gelatinous substance ; k, h, roots of the vagus nerve ; I, roots of the hypoglossal, or ninth nerve ; m, a thick bundle of white longitudinal fibres connected with the root of the vagus; n, soft column ( Zartstrang, Stilling) ; o, wedge-like column ( Keelstrang, Stilling) ; p, trans- verse and arciform fibres ; q, nucleus of the olivary bodies ; r, the large nucleus of the pyramid ; s,s,s, the small nuclei of the pyramid ; u, a mass of grey substance near the nucleus of the olives (OHven-Nebenhern); u,q,r, are traversed by numerous fibres passing in a transverse semicircular direction ; v, w, arciform fibres ; x, grey matter near the root of the vagus. structure, as viewed by a magnifying power of ten diameters. Nothing can be more true to nature, so far as it goes, but its correct explana- tion must be sought for by diligent investigation with high powers. Numerous bloodvessels pe- netrate the central matter of the medulla, and no doubt many of the lines, which Stilling supposes to represent fibres, are in reality ves- sels passing to the grey matter. The mesocephale has very much the same kind of structure as the medulla oblongata; trans- verse fibres (those of the pons) at its anterior part, longitudinal ones just behind these (pyra- mids), with vesicular matter freely intermixed. Its posterior part is the same in structure as the optic thalamus, and consists of numerous fibres with an abundant quantity of grey matter. The inferi
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