Explanation of the plate. 



Fig. 1. Section through the cervical swelling; GoU's columns are degenerated (a). 

 » 2. Section through the lumbar swelling c:a 4,5 cm above the end of the spinal cord. 



In the left half, the upper part of a cavity (a). 

 » 3. Section through the lumbar swelling c:a 3,5 cm above the end of the spinal cord. 



In the left half of the grey substance, the lower part of the cavity (a). 

 » 4. Prom the grey substance of the right horn in the lumbar marrow; 



a. degenerated ganglion cells. 

 » 5 and 6. Sections through the sacral nerves; 



a. normal nerves; 



b. degenerated nerves. 



Fig. 1 — 3 are 5 times magnified. 



