Fic. 34. Rabbil received 3 mgin. ol bo\ine />'. Iiihoriilosis intradeiinally. Appearance 

 of lesion tour cla)s after inoculation. (Control.) 



V 



Iji^ 



Fig. 35. Rabbit sensitized by single injection of horse serum six days previously, 

 received intradermal injection of 3 mgm. of B. C. G. Four days after B. C. G. inocula- 

 tioir, horse serum was injected intravenously. Note severe circumscribed hemorrhagic 

 reaction at B. C. G. site. 



