LIST OF ILLUSTRATIONS XXVll 



26. Seclion of twelve day old sarcoma 180 tweniy-iour hours after 



intravenous injection of a B. ciilciilidis filtiate . 248 



27. Appearance of reaction at jjrepared skin site oi^e-half hour 



after intra\enous injection of horse serimi following sensi- 

 tization by single injection of horse serum six days pre- 

 viously, followed by intradermal injection of luidiluted 

 B. typhosus active jjrinciples 270 



28. Appearance of reaction at j^repared skin site one hour after 



intravenous injection of horse serum 271 



29. Appearance of reaction at |irepared skin site four hoins after 



intravenous injection of horse serum 272 



30. Appearance of reaction at prepared skin site twentv-four 



hours after intra\enous injection of horse serum 273 



31. Appearance of reaction at prepared skin site ninety-six hours 



after intravenous injection of horse serum 274 



32. Histologic ajjjjearance of reaction at prepared skin site forty- 



five minutes after intraxenous injection of horse serum, 

 showing perivascidar indanmiation and thrombosis 275 



33. Histologic apj^earance of reaction at prepared skin site four 



hours after intraxenous injection of horse serimi 276 



34. Appearance of lesion loin days after intradermal inocidation 



of rabbit with bovine B. tuberculosis 290 



35. Severe circumscribed hemorrhagic reaction at site of B.C.G. 



inoculation in rabbit sensitized by single injection of horse 

 servmi six days previously, followed by intradermal injec- 

 tion of B.C.G. and four days later intraxenous injection of 

 horse serum 290 



36. Hemorrhagic reaction at site of intradermal injection of 



bovine B. tuberculosis followed four days later by intra- 

 venous injection of B. typhosus active principles 291 



37. Hemorrhagic reaction at site of intradermal injection of 



bovine B. tuberculosis followed three days later by intra- 

 venous injection of B. typhosus active principles 291 



38. /, Typical leaction of skin: petechial hemorrhages following 



application of suction to normal portion of skin distant 

 from site of typical reaction. 2, Histologic appearance of 

 typical reaction. 5. Histologic appearance of petechial 

 hemorrhages 380, 381 



39. Photomicrograph from autopsy stud\ in case of acute 



thrombocytopenic purjjura: platelet throndnis xvithin ar- 

 teriole of kidnev 383 



