. Journal of comparative neurology . Fig. 77 Bear, section through the genu showing that the indusium as itcurves beneath the genu develops a complete, though small, hippocampal for-mation with all the typical parts present. Compare figures 29, 43 and 58. Fig. 78 Fig embryo, 23 mm. Medial surface of the right half of the lamina terminalis contains the anterior commissure. The lamina supra-neuroporica is only slightly thickened. Between it and the velum transversumis the paraphysal arch, the angulus terminalis of His. 470. Fig. 79 Pig embryo, 28 mm. The lamina supraneuroporica is raise
. Journal of comparative neurology . Fig. 77 Bear, section through the genu showing that the indusium as itcurves beneath the genu develops a complete, though small, hippocampal for-mation with all the typical parts present. Compare figures 29, 43 and 58. Fig. 78 Fig embryo, 23 mm. Medial surface of the right half of the lamina terminalis contains the anterior commissure. The lamina supra-neuroporica is only slightly thickened. Between it and the velum transversumis the paraphysal arch, the angulus terminalis of His. 470. Fig. 79 Pig embryo, 28 mm. The lamina supraneuroporica is raised to amore vertical position by the growth of the hemisphere and the thalamus is rela-tively crowded. There is still no commissure visible in the lamina supraneuro-porica but it is somewhat thicker than in the 23 mm. stage. Fig. 80 Pig embryo, 40 mm. The lamina supraneuroporica is still moreelevated and the paraphysal arch is crowded into a deep narrow sac, in front ofthe developing choroid plexus. Now the anterior pallial commissure is evidentas a fibrous mass occupying the lamina supraneuroporica. There is up to thistime no secondary fusion nor extensive thickening in the region of the commis-sures. 471 472 J. B. JOHNSTON
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
