Section C. 



12 



new men, 1 probably unacclimated. No more sickness en route. All 

 of these cases except the captain's were not less than sixteen days from 

 Eio de Janiero before developing. 



XIII. French ship Emily Postel, twelve days from Vera Cruz via 

 Pensacola quarantine. Had "sickness" aboard just before leaving 

 Vera Cruz, 1 man. Sailed from Vera Cruz July 28 ; no sickness since 

 until crew went to discharge ballast, August 12. One man sick yellow 

 fever August 15, 2 men the same, August 19, and 1 man August 20. 

 Disinfection by sulphur was done on the appearance of the first case of 

 yellow fever and no case occurred save the above. All were developed 

 more than sixteen days after leaving Vera Cruz, hence from infection 

 on board. The history points to infection (infected mosquitoes) in the 

 hold. 



The picture given by the Curlew and Conderen are those of disease 

 conveyed by mosquitoes coming aboard already infected just before 

 they sailed. The infection was not introduced by the men who first 

 sickened, the interval between them and the next cases was too short. 

 Observe that they lay in the Gamboa, directly in the lee of a town 

 badly infected. The other two give the usual history of a clean place 

 (town or vessel) infected by some one developing yellow fever, con- 

 tracted elsewhere, in it. 



XIV. Dr. G., assistant surgeon U. S. Marine- Hospital Service, 

 developed yellow fever June 18 at the Gulf Quarantine Station, and 

 died June 29. He was immediately from New York, where he had been 

 on duty some months, and had been at the station but fourteen days 

 when he was taken ill. There had been no case of yellow fever at the 

 station that year. There were a number of vessels in quarantine, but 

 the Guntav and Oscar (No. XI) was the only one I judged to be infected. 

 On this vessel, as on the others, he had been with me inspecting, 

 opening up drawers and boxes, and going into every compartment, etc., 

 for the disinfection. I thought his infection was from this vessel. It 

 was certainly from some vessel. 



I think it will be granted from the above that the ability of a vessel 

 to carry the infection of yellow fever is no myth. Here are 13 vessels 

 which did so carry it collated from only three years' observation at a 

 single station. Such vessels are indeed rarer, much rarer, now than 

 they were before 1894, yet they still come. I saw 2 at Tortugas in 1894. 

 Other cases are reported by Geddings and by Echemendia at the same 

 place and at Port Tampa quarantine. Eosenan reports a case con- 

 tracted aboard the steamship Vigilancia, from New York, plying between 

 New York and Vera Cruz via Havana, in 1899. The steamship Bodo, 

 last year (1900), from Bocas del Toro, for Mobile, developed 3 cases of 

 yellow fever, seven, eight, and nine days out from Bocas del Toro. It 

 would not be difficult, I think, to multiply instances of recent date, yet 

 that they are rarer is without question. On the factors which have 

 brought this about we can barely touch. 



