730 DH JAMES W. DAWSON ON 



Plate LIU (Case 111) (pp. 696-698). 



Figs. 93-113. Sections through brain and spinal cord. Kulschitsky-Pal and picro-fuchsin. 



Figs. 93 and 94. Through cerebral hemispheres near the base of the optic thalami. a = affection of 

 the posterior horns; i = of the anterior horns; e = of the genu of the corpus callosum ; d = areas in the 

 path of the optic radiations; e = two early areas in the retro-lenticular portion of the internal capsule : 

 /=in the right parietal operculum; <; = in the left middle temporal convolution. 



Figs. 95-96. Through basal ganglia above the middle of the optic thalamus, (a), (b), and (d) as in 

 previous figures; r= areas in the splenium of the corpus callosum ; e = in the medullary rays and grey matter 

 of two parietal convolutions (fig. 285). 



Fig. 97. Horizontal section through left hemisphere near vertex. x 2. Numerous large and small 

 areas involving medullary rays and radiations. a = in the para-central lobule; b = in the pre-central lobule; 

 c = in the superior frontal gyrus. 



Figs. 98 and 99, x 3. Medulla oblongata above the decussation of the pyramids and at the middle 

 of the inferior olive. 



Figs. 100-101, x 3. Involvement of the optic chiasma and inner aspects of both optic nerves. 



Figs. 102-113, x 2. Various levels of the spinal cord. 



Plates LIV and LV, Figs. 123-142 (Case IV) (pp. 700-703). 



Figs. 114-142. Sections through brain and spinal cord. Kulschitsky-Pal with picro-fuchsin. 



Figs. 114-115. Horizontal sections through cerebral hemispheres at the level of the middle of the basal 

 ganglia, a = affection of the posterior horns; b = oi the anterior horns; e=of the genu, and d = oi the 

 splenium of the corpus callosum. 



Fig. 117. Above the roof of the right lateral ventricles, a = areas in the central white matter — probably 

 an extension of the peri-ventricular sclerosis of the roof of the ventricle. 



Fig. 116. At a higher level, left side, a = area in a convolution of the intra-parietal sulcus; 6 = in the 

 upper frontal gyrus. 



Figs. 118-124. Levels of medulla oblongata and pons Varolii. x 2|. 



Fig. 118. Above the decussion of the pyramids. 



Fig. 119. At lower level of the inferior olive. 



Fig. 120. Middle third of medulla. 



Fig. 121. Upper limit of the medulla with the cerebellum, a = affection of the hilum of the dentate 

 nucleus on both sides. 



Fig. 122. Middle third of pons with the cerebellum. a = areas in relation to the dentate nucleus ; 6 = to 

 the intra-medullnry root of the Vth nerve. 



Fig. 123. Upper third of pons. Note areas around the Vth root zones. 



Fig. 124. Mid-brain, a = peri-aqueductal sclerosis. b = extension forwards along median raphe, 

 involving the Illrd nuclei and the red nuclei on both sides; c = area in the substance of the right red 

 nucleus ; d = in the middle third of the right crus. 



Figs. 125-142. Various levels of the spinal cord, x 2. Note the marked involvement of the cervical 

 enlargement, the dorsal cord, and the third sacral segment; that the areas in the lumbar cord are small and 

 isolated, and are frequently confined to the grey matter ; and the almost complete symmetry of the involve- 

 ment in figs. 125, 126, 129, 130, and 138. 



Plate LV, Figs. 143-155 (Case V) (pp. 705-707). 



Figs. 143-147. Levels of the medulla oblongata and pons Varolii. Kulschitsky-Pal with picro-fuchsin, 

 x 2. Note that these regions were comparatively slightly affected in comparison with most of the ci 

 Fie. 143. Medulla oblongata above the decussation of the fillet. 



