22 



Veterinary Medicine. 



TABLE SHOWING PROMINENT PHENOMENA FROM LESIONS 

 OF THE CORD. 



HAI.I.UCINATIONS. 



Subjective cerebral impressions projected as real. Rabies. Toxins. 

 Poisons. Essential oils. Chloroform. 



Hallucinations are subjective impressions which the animal 

 supposes to be real. The disorders in his brain are projected out- 

 ward and become to him real objects and occurrences. 



They may arise from the presence of proliferation of microbes 

 in the brain as in rabies in animals. They may proceed from poi- 

 soning of the brain by toxins as in anthrax. 



They may be developed, in dogs especially, by the action of cer- 

 tain essential oils on the cerebral cortex. The first two classes 

 will be considered with those special diseases. The mental dis- 

 orders from drugs have been studied experimentally by Cadeac 

 and Mennier, and may be noticed in this place. 



