188 



the nomenclature of Malone') and Monakow^). The cells of the 

 former are perhaps somewhat smaller than normal, those of the 

 latter are of the nsiial size. Neither of the two kinds of cells have 

 a patholof^ical appearance. They are lying only clearly too closely 

 together. The result of this compression is a diminution of the whole 

 ganglion to abont ^/^ or less than its usual size. The medullated 

 fibres lying dorsally and later-ally from the C. g.e. (triangular area 

 of Wernicke and lateral medulla) have an entirely normal appear- 

 ance, they are only reduced in accordance with the diminution of 

 the ganglion. 



4. Occipital lobe. This lobe was cut — to the left — from the 

 transversal surface through the confluence of sulcus calcarinus and 

 sulcus parieto-occipitalis backward. The sagittal strata round the 

 posterior shell of the ventricle are extant, of normal colour, too 

 narrow and elongated ; there is a tolerable expansion of the ventricle. 

 The latter reveals itself also in so far that the cerebral ventricle is 

 tissure-shaped continued in a medial direction, ventral from the 

 inferior lip of the sulcus calcarinus. The calcar avis is well-developed. 

 At about the middle of the sulc. calcarinus — behind the place of 

 confluence with the sulc. parieto-occipitalis — there appears to exist 

 a transition-convolution (cuneolingual fold) the cortex of which has 

 not the typical characteristic of the calcarina-limitation : the strip of 

 ViCQ d'Azyr. As to this strip, which has given a name to the desig- 

 nated part of the cortex (area striata) it extends on all sections over 

 a part, distally over the entire limitation of the calcarina and reaches 

 exactly the occipital pole. The annexed figures show, in normal size, 

 its extension. Tlie interruption through the cuneolingual transition- 

 convolution mentioned above lies between figures 2 and 3. One sees 

 moreover from the reproductions, that the sulcus calcarinus, especially 

 in its distal part, has very little depth. In connection herewith the 

 length of VicQ u'Azyr's strip is on each section considerably smaller 

 than normally. 



This added to the abbreviation of the lob. occipitales proves thus 

 a considerable diminution of its extensity : 



We found the fibre percent-age of the cortex, both round the sulcus 

 culcarinus and the rest of the occipital part, normal. 



The cells of the cortex do not show any deviation in the area 

 striata, neither individually nor in their arrangement to strata. 



1) Malone: Ueber die Kerne des menschlichen Diencephalon. Abhdln d. k. preuss. 

 Akad. d. Wiss. Physik.-Math. Klasse, 1910. 



2) V. MoNAKOw: Gehirnpathologie. 



