FIG. 6.-Central canal filled with inflammatory exudate. Section from a case of epidemic poliomyelitis in a monkey. FIG. 7.-Central canal filled with inflammatory exudate. Section from dog injected with dilute HCN (2 per . cent) into subdural space. Dog 11. December, 1911. FIG. 8.-Section from spinal cord one week after injection into subdural space of dog of I c. c. dilute HCN (2 per cent) dog weighing 15 kilos. Flaccid paralysis of posterior extremities much more marked on left side. Dog 13. December 19, 1911. FIG. 9.-Left anterior horn of spinal gray matter of dog. Dog. 13. To show inflammatory changes. FIG. 10.-Right anterior horn of spinal gray matter from dog, injected with dilute HCN (2 per cent) into subdural space. Dog 17. December, 1911. Cord removed in 24 hours. FIG. 11-Anterior horn cell showing chromatolysis from spinal cord of dog 24 hours after subdural injection of I c. c. dilute HCN. Dog 17. December, 1911. FIG. 12. Section from dorsal spinal cord from Case 1422, Danvers Series, showing gliosis of substantia gelatinosa centralis, the epithelial lining of the central canal still persisting. FIG. 13. Section from lumbar spinal cord of Case 1422, Danvers Series. Gliosis about the central canal much more marked, amounting to tumor formation. Part of cell lining of central canal still persisting. |