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with blood from the finger, and also an agar tube with milk from the breast, 

 as before explained. Both tubes planted with blood gave the pale yellow 

 tetracoecus, and the ager tube planted with milk gave an abundant 

 germination of white tetracoecus colonies, which wore inoculated, as 

 already stated, into rabbit P, producing death in fifteen days. 



On July 14 the husband (E. S.) of the wet uurse fell sick with an 

 attack of non-albuminuric yellow fever. The temperature curve, though 

 lower, was of the same type as his wife's. On July 18 I planted two tubes 

 with his finger blood. One of the tubes remained sterile, the other gave a 

 pure culture of straw-coloured tetracoecus. 



On July 30 a sister (C. V.) of the wet nurse fell sick with a similar 

 attack; she had been staying with her since July 23. No albumen; 

 defervescence on the 7th of August. 



On August 5, in the morning, a female friend (C. R.) of this family, 

 who had been with them since July 20, fell ill with a serious attack of 

 albuminuric yellow fever, the albumen being specially abundant on the 

 fifth, sixth, and seventh days, having lasted from the third until the 

 eleventh day. She had repeated epistaxis, vomiting, without blood or black 

 matter, during the second paroxysm; defervescense set in on the eighth 

 day. Two tubes of glycerine broth planted from her finger blood on the 

 third day both gave pure cultures of the yellow tetracoecus, which proved 

 so virulent ou being inoculated into rabbits Q and R. 



On August 5, in the evening, another sister of the wet nurse, who had 

 been living with her since July 20, was attacked with simple albumiuuric 

 yellow fever. The albumen was not very abundant, but lasted from the third 

 to the ninth day ; remission occurred on the fifth, and defervescence on the 

 seventh day ; the menses were anticipated and the gums bled a little. Of 

 two tubes of glycerine broth planted with her finger blood, one remained 

 sterile, while the other gave the tetracoecus in pure culture. 



In this remarkable series of five consecutive cases of yellow fever, with 

 or without albuminuria, I admit that it is auythiug but proved that the 

 wet nurse acquired the disease in my house. I must mention, however, that 

 during the whole time that the inoculated rabbits had been kept in it 

 mosquitoes had been unusually abundant, and that the woman had declared 

 from the first that she had never been so much tormented by them since her 

 arrival in Cuba. It is well to keep this in mind, in view of a possible trans- 

 mission of the disease from animals to man. With regard to the four 

 subsequent cases developed in the room of Acosta Street, I do not think it 

 can be doubted that the infección was brought by the wet nurse, and that 

 the germs proceeded from her which in successive generations invaded 

 the others. 



