1105 



Tiie day after the operation the animal did not show many symptoms. After 

 the second day there was circus gait to the left. On the fourth day this last was 

 still visible and a film exposition was taken The parade step appeared then 

 distinctly visible. 



On the sixth day a change in the cat appeared. The animal tumbled over 

 regularly to the right, it could not walk and mewed strongly. On the seventh day 

 the cat lay dead in the cage, after more tlian 20 days after the operation in the 

 medulla spinalis was done. For the section see cat N '. 5. 



Cat No. 5. Operation as with N". 4. 



After awakening from the aether narcosis this cat too showed exactly the same 

 symptoms as the former cats, only the circus gait was not so distinct as with 

 cat N^. 4. Tlie further course was nearly the same. After film-exposition the parade 

 step appeared distinctly to be present (lig. 2). As with N". 4, this cat too was 

 found dead in its cage, nearly at the same time and three weeks after the opera- 

 tion, done in the medulla spinalis, but without the symptoms which N". 4 had 

 exhibited shortly before dying. 



The section by a mishap was only done on the head, as this was cut from the 

 trunk and was kept in fumaline, while the body was thrown away. After opening 

 of the crane, the bloodvessels of the brain surface and of the spinal cord up to 

 the place of operation were strongly overfilled. The wound itself was well -cured, 

 the candally lying part did not show alterations. After microscopic examination an 

 infiltration of small cells was found underneath the pia As this alteration appeared 

 three weeks after the operation and as both the cats were placed in one cage 

 and died nearly at the same time, the possibility exists, that they died of a 

 general infection. 



