9 



Section C 



3 deaths, June 28, June 29, and July 14, all with black vomit. Crew 

 refused duty at second death. Last case well July 13. Sixteen on 

 crew list ; 2 in Eio de Janeiro. Master had had yellow fever ; steward 

 sick just after leaving, not considered yellow fever. 



Six cases developed ten days after leaving Eio de Janeiro. Same 

 remarks as were made of the Magnolia apply here. 



No record is made of where these 2 vessels lay in Eio de Janeiro, the 

 writer not then appreciating the importance of this. 



1889. 



My notes for 1889 are lost, and indeed there may have been in 1888 

 more than the 2 vessels given above, which should have been included 

 in this paper ; but my notes, taken at first solely with the view of 

 determining the period of incubation of yellow fever, give data on only 

 these two sufficiently definite to determine that they were infected— 

 i. e., that yellow fever was contracted aboard. 



1890. 



III. British ship Avon, in rock ballast ; 22 in crew, 4 immune to yellow 

 fever. Sailed from Eio de Janeiro April 20. All well in port and en 

 route until thirty-eight days out, when a boy in port watch sickened 

 with yellow fever. Taken to hospital, Gulf Quarantine, on third day, 

 and died on sixth day. Another case developed two weeks later in a 

 quarantine attendant who helped me clean up the room, sail locker, in 

 which the boy was sick aboard ship. 



It is remarkable that there should have been only 1 case of yellow 

 fever among the crew aboard this vessel. At the time it was ascribed 

 to the fact that this boy, the only one on the port watch, helped a man, 

 shipped in Eio de Janeiro and immune to yellow fever, overhaul his 

 chest a few days before the boy was taken sick. Whether there was an 

 infected mosquito in the chest which had survived this length of time, 

 or whether there was any relation between the chest and the fever, may 

 be a question. It in no wise affects the present question, that the dis- 

 ease was, contracted aboard. It was the first case seen at this station 

 that year. 



IV. British ship Curlew, from Eio de Janeiro, with rock ballast. 

 No sickness was reported en route, in port, or On arrival. She was 

 cleaned July 22 to July 23, 1890, and disinfection completed July 25, in 

 the afternoon. One case of yellow fever developod July 27, the sixty- 

 fourth day out, in the early morning before day. 



V. British ship Chippewa, from Eio de Janeiro, with rock ballast. 

 No sickness was reported in port, en route, or on arrival. She was 

 cleaned July 26 and July 27, and disinfection completed July 28. One 

 man, the quartermaster, developed yellow fever July 29, at night, sixty- 

 eight days out from Eio de Janeiro. 



