126 PATHOGENIC BACTERIA. 
——<< es es By Pa PE 
Fic. 59.—Koch’s syringe. 
(c) Record the daily weight of the animal until 
death. 
(d) Perform an autopsy on the dead rabbit, note 
Fic. 60.—Method of making an intravenous injection into 
arabbit. Observe that the needle enters the posterior vein 
from the hairy surface (McFarland). 
the various pathologic changes, and make cultures 
and cover-glass smears from all the organs and 
from the blood.’ 
1Sear the surface of the body-wall and of each viscus 
with a red-hot spatula or old scalpel before cutting into 
