PLATE 1 





f 



■-a 

 ■ ■■.!... 





3 



# 



::-=^' 



Sm 





v,-;!^"" 



Nerve-cells containing Negri bodies. Hippocampus impression preparation, 

 dog. Van Gieson stain; X looo. i, Negri bodies; 2, capillary; 3, free red 

 blood-corpuscles. (Courtesy of Langdon Frothingham.) 



