63 

 Yellow Fever Produced by the Inoculation of Blood Serum. 



Bonifacio Orea (case LXV),aged 33, single; born in the mountains 

 near Puebla; said that he had never been on the coast and never had 

 any sickness of any kind. He was physically sound on examination ; 

 blood and urine negative. 



He Was brought to Vera Cruz August 28 and kept in a mosquito- 

 proof room under observation for eighteen days. 



Temperature chart of Bonifacio Orea. 



On September 15, at 4- p. m., he was given an intravenous injection 

 into one of his arm veins of 5 cc. of Marcos Cruz's diluted serum fil- 

 tered through a Chamberland B bougie. As the serum had been 

 diluted with an equal quantity of physiological salt solution Orea 



