8 S. E. Henschen, 



Section 1-/7 1883. 



Dura rather dark-red from fine injected vessels, inner surface 

 smooth and glistening. The pia likewise hyperaemic. Subarachnoid 

 fluid plenteous. The ventricles of the brain distended by a clear fluid 

 of more than normal quantity. Brain substance tolerably firm, shows 

 hyperaemia in white as well as grey substance. 



The membranes of the spinal cord that show nothing abnormal 

 more than that their vessels are filled with blood. 



The consistency of the spinal cord is diminished. In the cervical 

 cord the delineation of the grey substance is indistinct and the white sub- 

 stance is swollen. Delineation becomes more distinct in the dorsal part. 

 In the left anterior half of the lumbar medulla there is in the gre}^ 

 substance a cavity which measures in the length about 1 — 2 cm and 

 about 1 cm. transversely. Above and below as well as on the sides of 

 this cavity the substance of the spinal cord is grey-red in colour and 

 very loose. 



On making a transversal section nothing was observed to run out 

 of this cay'iij. 



The white substance in the medulla is on an average looser than 

 normal, softest, almost soppy, in the cervical and lumbar cord. 



Microscopical Examination. 



Spinal cord. 



Of this about 80 transverse sections were cut from the cervical 

 marrow, cervical swelling, lower part of the dorsal marrow, loin swelling 

 and the caudalpart. Coloured in Weigert's hematoxyline, carmine and 

 »black-blue». 



Cervical Marrow. 



No macroscopical changes were to be seen with the exception that 

 the Goll's columns were degenerated. 



The grey substance had preserved its form and the cornua were 

 similar on both sides. The anterior as well as the posterior cornua 

 and commissure had numerous well-coloured and there fore normal nerve- 

 bundles and single nerve-fibres. 



The cells in the anterior horn appear to be scanty. There are all 

 transitions between fairly large and almost normal cells Avith well defined 

 nuclei and sharp outlines and distinct but not numerous processes and 

 completely atrophied cells, these latter are numerous. They ary very 



