462 RABIES 



in the human species. These illustrations from the experi- 

 ences of a few laboratories could be duplicated from the records 

 of many others. 



In Europe the disease seems to be more prevalent. In 

 1898 the official reports show 1,202 cases of rabies in animals 

 (mosth' dogs) in German}-. In 1899, 2,374 rabid animals 

 were reported from France and 444 cases from Belgium. 



■^ c ■ 





c7- 



Fig. 1 10. A drawing from a section of a rabid brain, showing large 

 nerve cells containing Negri bodies, {a) Nerve cell, (b) nucleus of 

 nerve cell, {c) Negri bodies. Much enlarged. 



§ 369. Etiology. Although rabies has long been recog- 

 nized as a specific disease, its primary etiological factor has but 

 recently been discovered by Negri in the brain and spinal cord 

 of the affected animal. In certain instances the presence of 

 the virus has been reported in the salivary glands, pancreas 

 and milk. It has not been found in the blood. 



In 1903, Negri, of the University of Pavia, described 

 small bodies or cell inclusions, since called Negri bodies, which 

 he found in the Purkingie cells of the cerebellum and in the 



