I 113 



TabLe 9. — Nonimmunes and inoculations to which they were subjected. 



Subject, age, and nationality. 



A, nonimmune, 23 years, Canadian. 



B, nonimmune, 44 years, Dalmatian 



» 



C, nonimmune, 16 years, Austrian.. 



D, nonimmune, 26 years, Norwegian 



E, nonimmune, 21 years, American. 



F, nonimmune, 23 years, American. 



6, nonimmune, 23 years, American . 



H, nonimmune, 34 years, American. 

 J, nonimmune, 45 years, Irish 



K, nonimmune, 27 years, Norwegian 

 L, nonimmune, 38 years, American. 



M, nonimmune, 20 years, American . 



N, nonimmune, 31 years, Irish 



a Ages given in this table are minimal. For further details consult previous tables. 



In all, thirteen subjects were used. After each inoculation they 

 were kept under observation for at least 7 days, except in three 

 instances, in two of which the observation period was 5 arid in the 

 third 6 days. 



Our results were uniformly negative, no reaction of any kind being 

 observed in any of the subjects of our inoculations. 



CONCLUSION. 



In view of the negative results recorded by us in our efforts to con- 

 firm the positive work of Marchoux and Simond, we feel that addi- 

 tional work will be necessary to settle the question of the hereditary 

 transmission of the parasite of yellow fever in the Stegomyia fasciata. 

 Nevertheless, the sanitarian will do well to continue his measures of 

 mosquito destruction after the suppression of an epidemic. 



