126 HISTORICAL SURVEY OF YELLOW FEVER 



years 1730, 1731, and 1736, recorded by different 

 authorities, the two first being \'ery particuhirly noticed 

 by Villalba in his curious M'ork ' Epidemilogia Espanola.' 

 It seems equally extraordinary that those writers should 

 have overlooked the black vomit epidemic which pre- 

 vailed in Spain previous to those of Cadiz and JNIalaga." 



Race Susccptibilitij. — The Latin races are perhaps 

 those which are considered to be the most liable to 

 yellow fever. Thus in British Guiana Dr. AValbridge 

 gave it as his opinion that the most predisposed were 

 the Norwegians, Danes, Germans, and Portuguese, the 

 latter being so greatly predisposed that their emigration 

 from Madeira was prohibited for a time. One of the 

 reasons why the Latin races are regarded as more 

 suscejJtible comes no doubt from the fact that these 

 races inliabit the yellow fever zones. They were the 

 first settlers and were the first to suffer. But in the 

 days when large bodies of British troops were stationed 

 in the AVest Indies, they suffered to a terrible extent, 

 as M'e have already seen. There may, however, be 

 some reason for the Latin races appearing to suffer 

 more than the other races, and that is this : in my 

 experience I have obtained the impression that in the 

 houses, yards, and gardens kept by the Portuguese, 

 Spanish or French, there are more water-containers of 

 all kinds for storing the drinking water and washing 

 water for the clothes, water for the poultry and 

 domestic animals. Tlie houses of the I^atin people 

 appear to me always to have more children, domestic 

 animals, chickens, etc., about tlian the houses of the 

 natives or those of the English residents. So, therefore. 



